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<!DOCTYPE html>
<script>
var value = "" + Math.random();
document.cookie = `dc_samesite_strict=${value}; secure; sameSite=strict; path=/`;
document.cookie = `dc_samesite_lax=${value}; secure; sameSite=lax; path=/`;
document.cookie = `dc_samesite_none=${value}; secure; sameSite=none; path=/`;
parent.postMessage({value}, "*");
</script>