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<!DOCTYPE html>↩
<html>↩
<head>↩
<script>↩
↩
function boom()↩
{↩
var r = document.documentElement;↩
document.__proto__ = document.createTextNode("text");↩
r.style.counterReset = "a";↩
}↩
↩
</script>↩
</head>↩
<body onload="boom();"></body>↩
</html>↩