<!DOCTYPE html>
<input type="checkbox" checked>
<input type="checkbox" checked>
<input type="checkbox">
<input type="checkbox" checked="true">
<input type="checkbox" checked="false">
<input checked type="checkbox">
<input type="checkbox">
<input checked="true" type="checkbox">
<input checked="false" type="checkbox">
<input type="checkbox" checked>
<input type="checkbox">
<input type="checkbox" checked="true">
<input type="checkbox" checked="false">
