<!DOCTYPE html>
<script>
if (window.testRunner)
testRunner.dumpAsText();
</script>
<svg>
<feConvolveMatrix order="0"/>
<feConvolveMatrix order="0.49999999"/>
<feConvolveMatrix order="0.5"/>
<feConvolveMatrix order="-1"/>
<feConvolveMatrix order="1 0"/>
<feConvolveMatrix order="1 0.49999999"/>
<feConvolveMatrix order="1 0.5"/>
<feConvolveMatrix order="1 -1"/>
<feConvolveMatrix order="1 one"/>
<feConvolveMatrix order="one two"/>
</svg>