<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:weightSum="10"
    tools:context=".MainActivity">


    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="2"
        android:orientation="horizontal"
        android:weightSum="10">
        <LinearLayout
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="3">
            <Button
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:text="@string/button_0"/>
        </LinearLayout>
        <LinearLayout
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="7">
            <Button
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:text="@string/button_1"/>
        </LinearLayout>
    </LinearLayout>
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="2"
        android:orientation="horizontal"
        android:weightSum="10">
        <LinearLayout
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="6">
            <Button
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:text="@string/button_2"/>
        </LinearLayout>
        <LinearLayout
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="4">
            <Button
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:text="@string/button_3"/>

        </LinearLayout>
    </LinearLayout>
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="2"
        android:orientation="horizontal"
        android:weightSum="10">
        <LinearLayout
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="5">
            <Button
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:text="@string/button_4"/>
        </LinearLayout>
        <LinearLayout
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="5">
            <Button
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:text="@string/button_5"/>
        </LinearLayout>
    </LinearLayout>
    <LinearLayout
    android:layout_width="match_parent"
    android:layout_height="0dp"
    android:layout_weight="2"
    android:orientation="horizontal"
    android:weightSum="10">
    <LinearLayout
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="2">
        <Button
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:text="@string/button_4"/>
    </LinearLayout>
    <LinearLayout
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="4">
        <Button
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:text="@string/button_5"/>
    </LinearLayout>
    <LinearLayout
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="4">
        <Button
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:text="@string/button_6"/>
    </LinearLayout>
</LinearLayout>
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="2"
        android:orientation="horizontal"
        android:weightSum="10">
        <LinearLayout
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="3">
            <Button
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:text="@string/button_4"/>
        </LinearLayout>
        <LinearLayout
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="4">
            <Button
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:text="@string/button_5"/>
        </LinearLayout>
        <LinearLayout
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="3">
            <Button
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:text="@string/button_6"/>
        </LinearLayout>
    </LinearLayout>

</LinearLayout>

<resources>
    <string name="app_name">My Application</string>
    <string name="button_0">Button 0</string>
    <string name="button_1">Button 1</string>
    <string name="button_2">Button 2</string>
    <string name="button_3">Button 3</string>
    <string name="button_4">Button 4</string>
    <string name="button_5">Button 5</string>
    <string name="button_6">Button 6</string>
</resources>