michael@0: function dependentStrings()
michael@0: {
michael@0:   var a = [];
michael@0:   var t = "abcdefghijklmnopqrst";
michael@0:   for (var i = 0; i < 10; i++) {
michael@0:     var s = t.substring(2*i, 2*i + 2);
michael@0:     a[i] = s + s.length;
michael@0:   }
michael@0:   return a.join("");
michael@0: }
michael@0: assertEq(dependentStrings(), "ab2cd2ef2gh2ij2kl2mn2op2qr2st2");