Task: Program Execution
Input (English): U, 6153, e, C, 6445, 1229, 9463, U, O, d, h, r, 1221, q, s, 151
Output (English): 21, 6153, 5, 3, 6445, 1229, 9463, 21, 15, 4, 8, 18, 1221, 17, 19, 151