diff --git a/java/res/values-land/dimens.xml b/java/res/values-land/dimens.xml
index fbfbb51..ddf7f7f 100644
--- a/java/res/values-land/dimens.xml
+++ b/java/res/values-land/dimens.xml
@@ -53,9 +53,12 @@
     <fraction name="key_uppercase_letter_ratio">40%</fraction>
     <fraction name="key_preview_text_ratio">90%</fraction>
     <fraction name="spacebar_text_ratio">40.000%</fraction>
+    <dimen name="key_preview_offset">0.0dp</dimen>
+
+    <!-- For 5-rows keyboard -->
+    <fraction name="key_bottom_gap_5rows">3.20%p</fraction>
     <fraction name="key_letter_ratio_5rows">78%</fraction>
     <fraction name="key_uppercase_letter_ratio_5rows">48%</fraction>
-    <dimen name="key_preview_offset">0.0dp</dimen>
 
     <dimen name="key_preview_offset_ics">1.6dp</dimen>
     <!-- popup_key_height x -0.5 -->
diff --git a/java/res/values-sw600dp-land/dimens.xml b/java/res/values-sw600dp-land/dimens.xml
index 8283cd9..4daa567 100644
--- a/java/res/values-sw600dp-land/dimens.xml
+++ b/java/res/values-sw600dp-land/dimens.xml
@@ -51,9 +51,12 @@
     <fraction name="key_hint_label_ratio">34%</fraction>
     <fraction name="key_uppercase_letter_ratio">29%</fraction>
     <fraction name="spacebar_text_ratio">30.0%</fraction>
+    <dimen name="key_uppercase_letter_padding">4dp</dimen>
+
+    <!-- For 50rows keyboard -->
+    <fraction name="key_bottom_gap_5rows">3.20%p</fraction>
     <fraction name="key_letter_ratio_5rows">62%</fraction>
     <fraction name="key_uppercase_letter_ratio_5rows">36%</fraction>
-    <dimen name="key_uppercase_letter_padding">4dp</dimen>
 
     <dimen name="suggestions_strip_padding">252.0dp</dimen>
     <integer name="max_more_suggestions_row">5</integer>
diff --git a/java/res/values-sw600dp/dimens.xml b/java/res/values-sw600dp/dimens.xml
index 78aa605..e5c32a3 100644
--- a/java/res/values-sw600dp/dimens.xml
+++ b/java/res/values-sw600dp/dimens.xml
@@ -63,11 +63,14 @@
     <fraction name="key_uppercase_letter_ratio">22%</fraction>
     <fraction name="key_preview_text_ratio">50%</fraction>
     <fraction name="spacebar_text_ratio">28.0%</fraction>
-    <fraction name="key_letter_ratio_5rows">52%</fraction>
-    <fraction name="key_uppercase_letter_ratio_5rows">27%</fraction>
     <dimen name="key_preview_height">94.5dp</dimen>
     <dimen name="key_preview_offset">16.0dp</dimen>
 
+    <!-- For 50rows keyboard -->
+    <fraction name="key_bottom_gap_5rows">3.20%p</fraction>
+    <fraction name="key_letter_ratio_5rows">52%</fraction>
+    <fraction name="key_uppercase_letter_ratio_5rows">27%</fraction>
+
     <dimen name="key_preview_offset_ics">8.0dp</dimen>
     <!-- popup_key_height x -0.5 -->
     <dimen name="more_keys_keyboard_vertical_correction_ics">-31.5dp</dimen>
diff --git a/java/res/values-sw768dp-land/dimens.xml b/java/res/values-sw768dp-land/dimens.xml
index ac94c92..8f3de55 100644
--- a/java/res/values-sw768dp-land/dimens.xml
+++ b/java/res/values-sw768dp-land/dimens.xml
@@ -53,9 +53,12 @@
     <fraction name="key_hint_label_ratio">28%</fraction>
     <fraction name="key_uppercase_letter_ratio">24%</fraction>
     <fraction name="spacebar_text_ratio">24.00%</fraction>
+    <dimen name="key_preview_height">107.1dp</dimen>
+
+    <!-- For 5-rows keyboard -->
+    <fraction name="key_bottom_gap_5rows">2.65%p</fraction>
     <fraction name="key_letter_ratio_5rows">53%</fraction>
     <fraction name="key_uppercase_letter_ratio_5rows">30%</fraction>
-    <dimen name="key_preview_height">107.1dp</dimen>
 
     <dimen name="key_preview_offset_ics">8.0dp</dimen>
 
diff --git a/java/res/values-sw768dp/dimens.xml b/java/res/values-sw768dp/dimens.xml
index 0fd9ced..7caa984 100644
--- a/java/res/values-sw768dp/dimens.xml
+++ b/java/res/values-sw768dp/dimens.xml
@@ -64,11 +64,14 @@
     <fraction name="key_uppercase_letter_ratio">26%</fraction>
     <fraction name="key_preview_text_ratio">50%</fraction>
     <fraction name="spacebar_text_ratio">29.03%</fraction>
-    <fraction name="key_letter_ratio_5rows">51%</fraction>
-    <fraction name="key_uppercase_letter_ratio_5rows">33%</fraction>
     <dimen name="key_preview_height">94.5dp</dimen>
     <dimen name="key_preview_offset">16.0dp</dimen>
 
+    <!-- For 5-rows keyboard -->
+    <fraction name="key_bottom_gap_5rows">2.95%p</fraction>
+    <fraction name="key_letter_ratio_5rows">51%</fraction>
+    <fraction name="key_uppercase_letter_ratio_5rows">33%</fraction>
+
     <dimen name="key_preview_offset_ics">8.0dp</dimen>
     <!-- popup_key_height x -0.5 -->
     <dimen name="more_keys_keyboard_vertical_correction_ics">-31.5dp</dimen>
diff --git a/java/res/values/dimens.xml b/java/res/values/dimens.xml
index e0fcd5e..22cd325 100644
--- a/java/res/values/dimens.xml
+++ b/java/res/values/dimens.xml
@@ -65,8 +65,6 @@
     <fraction name="key_uppercase_letter_ratio">35%</fraction>
     <fraction name="key_preview_text_ratio">82%</fraction>
     <fraction name="spacebar_text_ratio">33.735%</fraction>
-    <fraction name="key_letter_ratio_5rows">64%</fraction>
-    <fraction name="key_uppercase_letter_ratio_5rows">41%</fraction>
     <dimen name="key_preview_height">80dp</dimen>
     <dimen name="key_preview_offset">-8.0dp</dimen>
 
@@ -75,6 +73,11 @@
     <dimen name="key_popup_hint_letter_padding">2dp</dimen>
     <dimen name="key_uppercase_letter_padding">2dp</dimen>
 
+    <!-- For 5-rows keyboard -->
+    <fraction name="key_bottom_gap_5rows">3.20%p</fraction>
+    <fraction name="key_letter_ratio_5rows">64%</fraction>
+    <fraction name="key_uppercase_letter_ratio_5rows">41%</fraction>
+
     <dimen name="key_preview_offset_ics">8.0dp</dimen>
     <!-- popup_key_height x -0.5 -->
     <dimen name="more_keys_keyboard_vertical_correction_ics">-26.4dp</dimen>
diff --git a/java/res/xml-sw600dp-land/kbd_thai.xml b/java/res/xml-sw600dp-land/kbd_thai.xml
index a7763f2..e29ddb5 100644
--- a/java/res/xml-sw600dp-land/kbd_thai.xml
+++ b/java/res/xml-sw600dp-land/kbd_thai.xml
@@ -20,9 +20,9 @@
 
 <Keyboard
     xmlns:latin="http://schemas.android.com/apk/res/com.android.inputmethod.latin"
-    latin:rowHeight="20%p"
-    latin:verticalGap="3.20%p"
     latin:keyTypeface="normal"
+    latin:rowHeight="20%p"
+    latin:verticalGap="@fraction/key_bottom_gap_5rows"
     latin:keyLetterSize="@fraction/key_letter_ratio_5rows"
     latin:keyShiftedLetterHintRatio="@fraction/key_uppercase_letter_ratio_5rows"
     latin:touchPositionCorrectionData="@null"
diff --git a/java/res/xml-sw600dp/kbd_thai.xml b/java/res/xml-sw600dp/kbd_thai.xml
index a7763f2..e29ddb5 100644
--- a/java/res/xml-sw600dp/kbd_thai.xml
+++ b/java/res/xml-sw600dp/kbd_thai.xml
@@ -20,9 +20,9 @@
 
 <Keyboard
     xmlns:latin="http://schemas.android.com/apk/res/com.android.inputmethod.latin"
-    latin:rowHeight="20%p"
-    latin:verticalGap="3.20%p"
     latin:keyTypeface="normal"
+    latin:rowHeight="20%p"
+    latin:verticalGap="@fraction/key_bottom_gap_5rows"
     latin:keyLetterSize="@fraction/key_letter_ratio_5rows"
     latin:keyShiftedLetterHintRatio="@fraction/key_uppercase_letter_ratio_5rows"
     latin:touchPositionCorrectionData="@null"
diff --git a/java/res/xml-sw768dp-land/kbd_thai.xml b/java/res/xml-sw768dp-land/kbd_thai.xml
index 0f8516f..e29ddb5 100644
--- a/java/res/xml-sw768dp-land/kbd_thai.xml
+++ b/java/res/xml-sw768dp-land/kbd_thai.xml
@@ -20,9 +20,9 @@
 
 <Keyboard
     xmlns:latin="http://schemas.android.com/apk/res/com.android.inputmethod.latin"
-    latin:rowHeight="20%p"
-    latin:verticalGap="2.65%p"
     latin:keyTypeface="normal"
+    latin:rowHeight="20%p"
+    latin:verticalGap="@fraction/key_bottom_gap_5rows"
     latin:keyLetterSize="@fraction/key_letter_ratio_5rows"
     latin:keyShiftedLetterHintRatio="@fraction/key_uppercase_letter_ratio_5rows"
     latin:touchPositionCorrectionData="@null"
diff --git a/java/res/xml-sw768dp-land/kbd_thai_symbols.xml b/java/res/xml-sw768dp-land/kbd_thai_symbols.xml
index 1531458..a5bb3ee 100644
--- a/java/res/xml-sw768dp-land/kbd_thai_symbols.xml
+++ b/java/res/xml-sw768dp-land/kbd_thai_symbols.xml
@@ -21,7 +21,9 @@
 <Keyboard
     xmlns:latin="http://schemas.android.com/apk/res/com.android.inputmethod.latin"
     latin:rowHeight="20%p"
-    latin:verticalGap="2.65%p"
+    latin:verticalGap="@fraction/key_bottom_gap_5rows"
+    latin:keyLetterSize="@fraction/key_letter_ratio_5rows"
+    latin:keyShiftedLetterHintRatio="@fraction/key_uppercase_letter_ratio_5rows"
     latin:touchPositionCorrectionData="@null"
 >
     <include
diff --git a/java/res/xml-sw768dp-land/kbd_thai_symbols_shift.xml b/java/res/xml-sw768dp-land/kbd_thai_symbols_shift.xml
index fa30f24..d011dff 100644
--- a/java/res/xml-sw768dp-land/kbd_thai_symbols_shift.xml
+++ b/java/res/xml-sw768dp-land/kbd_thai_symbols_shift.xml
@@ -21,7 +21,9 @@
 <Keyboard
     xmlns:latin="http://schemas.android.com/apk/res/com.android.inputmethod.latin"
     latin:rowHeight="20%p"
-    latin:verticalGap="2.65%p"
+    latin:verticalGap="@fraction/key_bottom_gap_5rows"
+    latin:keyLetterSize="@fraction/key_letter_ratio_5rows"
+    latin:keyShiftedLetterHintRatio="@fraction/key_uppercase_letter_ratio_5rows"
     latin:touchPositionCorrectionData="@null"
 >
     <include
diff --git a/java/res/xml-sw768dp/kbd_thai.xml b/java/res/xml-sw768dp/kbd_thai.xml
index 7e44514..e29ddb5 100644
--- a/java/res/xml-sw768dp/kbd_thai.xml
+++ b/java/res/xml-sw768dp/kbd_thai.xml
@@ -20,9 +20,9 @@
 
 <Keyboard
     xmlns:latin="http://schemas.android.com/apk/res/com.android.inputmethod.latin"
-    latin:rowHeight="20%p"
-    latin:verticalGap="2.95%p"
     latin:keyTypeface="normal"
+    latin:rowHeight="20%p"
+    latin:verticalGap="@fraction/key_bottom_gap_5rows"
     latin:keyLetterSize="@fraction/key_letter_ratio_5rows"
     latin:keyShiftedLetterHintRatio="@fraction/key_uppercase_letter_ratio_5rows"
     latin:touchPositionCorrectionData="@null"
diff --git a/java/res/xml-sw768dp/kbd_thai_symbols.xml b/java/res/xml-sw768dp/kbd_thai_symbols.xml
index e2e5f5d..a5bb3ee 100644
--- a/java/res/xml-sw768dp/kbd_thai_symbols.xml
+++ b/java/res/xml-sw768dp/kbd_thai_symbols.xml
@@ -21,7 +21,9 @@
 <Keyboard
     xmlns:latin="http://schemas.android.com/apk/res/com.android.inputmethod.latin"
     latin:rowHeight="20%p"
-    latin:verticalGap="2.95%p"
+    latin:verticalGap="@fraction/key_bottom_gap_5rows"
+    latin:keyLetterSize="@fraction/key_letter_ratio_5rows"
+    latin:keyShiftedLetterHintRatio="@fraction/key_uppercase_letter_ratio_5rows"
     latin:touchPositionCorrectionData="@null"
 >
     <include
diff --git a/java/res/xml-sw768dp/kbd_thai_symbols_shift.xml b/java/res/xml-sw768dp/kbd_thai_symbols_shift.xml
index a1358d4..d011dff 100644
--- a/java/res/xml-sw768dp/kbd_thai_symbols_shift.xml
+++ b/java/res/xml-sw768dp/kbd_thai_symbols_shift.xml
@@ -21,7 +21,9 @@
 <Keyboard
     xmlns:latin="http://schemas.android.com/apk/res/com.android.inputmethod.latin"
     latin:rowHeight="20%p"
-    latin:verticalGap="2.95%p"
+    latin:verticalGap="@fraction/key_bottom_gap_5rows"
+    latin:keyLetterSize="@fraction/key_letter_ratio_5rows"
+    latin:keyShiftedLetterHintRatio="@fraction/key_uppercase_letter_ratio_5rows"
     latin:touchPositionCorrectionData="@null"
 >
     <include
diff --git a/java/res/xml/kbd_pcqwerty.xml b/java/res/xml/kbd_pcqwerty.xml
index cebca4f..a6ab2ba 100644
--- a/java/res/xml/kbd_pcqwerty.xml
+++ b/java/res/xml/kbd_pcqwerty.xml
@@ -21,7 +21,9 @@
 <Keyboard
     xmlns:latin="http://schemas.android.com/apk/res/com.android.inputmethod.latin"
     latin:rowHeight="20%p"
-    latin:verticalGap="3.20%p"
+    latin:verticalGap="@fraction/key_bottom_gap_5rows"
+    latin:keyLetterSize="@fraction/key_letter_ratio_5rows"
+    latin:keyShiftedLetterHintRatio="@fraction/key_uppercase_letter_ratio_5rows"
     latin:touchPositionCorrectionData="@null"
 >
     <include
diff --git a/java/res/xml/kbd_pcqwerty_symbols.xml b/java/res/xml/kbd_pcqwerty_symbols.xml
index fd64e5b..e862748 100644
--- a/java/res/xml/kbd_pcqwerty_symbols.xml
+++ b/java/res/xml/kbd_pcqwerty_symbols.xml
@@ -21,7 +21,9 @@
 <Keyboard
     xmlns:latin="http://schemas.android.com/apk/res/com.android.inputmethod.latin"
     latin:rowHeight="20%p"
-    latin:verticalGap="3.20%p"
+    latin:verticalGap="@fraction/key_bottom_gap_5rows"
+    latin:keyLetterSize="@fraction/key_letter_ratio_5rows"
+    latin:keyShiftedLetterHintRatio="@fraction/key_uppercase_letter_ratio_5rows"
     latin:touchPositionCorrectionData="@null"
 >
     <include