Task: Program Execution
Input (English): alfKrSVutkDwpIvlJqzBqZWTqJtfyDTT, WOuftkDwpIvlJqzBCQAgqRVJ
Output (English): a, b, d, f, i, j, k, l, p, q, r, s, t, u, v, w, y, z