Task: Program Execution
Input (English): ekLmDkaxeGvgOTdBmvMFaThtltzRCYzdGP, QMWqlNSuTdBmvMFaThtltBFDFBE
Output (English): a, b, c, d, e, f, g, h, k, l, m, o, p, r, t, v, x, y, z