ysangkok

"use strict";

// from http://stackoverflow.com/a/11454049/309483

var combine = function (m, n) {
    var a = m.length, c = '', count = 0, i;
    for (i = 0; i < a; i++) {
        if (m[i] === n[i]) {
            c += m[i];
        } else if (m[i] !== n[i]) {