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$(function () {
s = '12343563233';
d = []
c = []
for (i = 0; i < s.length; i++) {
d.push(s.charAt(i))
}
var a = "";
var v = (d.length) % 4;
for (j = d.length - 1; -1 < j; j--) {
if ((j - v) % 4 == 0) {
d[j] = "<" + d[j] + ">";
a += d[j];
}
c.push(d[j]);
}
var d = "";
for (var n = c.length - 1; -1 < n; n--) {
d += c[n];
}
alert(d);
});