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<script>
function run() {
setTimeout(first);
setTimeout(second);
setTimeout(third);
}
function first(x) {
let y = 0;
var z = 1;
debugger;
}
function second(x) {
if (second) {
let y = 0;
debugger;
}
}
function third(x) {
let y = 1;
if (y) {
let z = 0;
var v = 2;
debugger;
}
}
</script>