<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@drawable/ic_page_bg"
    android:orientation="vertical">

    <include
        android:id="@+id/top_layout"
        layout="@layout/lt_top" />

    <include
        android:id="@+id/key_layout"
        layout="@layout/lt_keyboard"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:visibility="gone" />

    <include
        android:id="@+id/question_layout"
        layout="@layout/lt_question"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_above="@+id/key_layout"
        android:layout_below="@+id/top_layout"
        android:visibility="gone" />

    <include layout="@layout/lt_result"
        android:id="@+id/result_layout"
        android:visibility="gone"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_below="@+id/top_layout" />

</RelativeLayout>