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actual = '';
expected = '0,0,1,1,2,2,3,3,';
{ let f = function() {
for (let x = 0; x < 4; ++x) {
(function() {
for (let y = 0; y < 2; ++y) {
appendToActual(x);
}
})()
}
};
f(0)
}
assertEq(actual, expected)