Task: Program Execution
Input (English): 6623, 8719, M, r, 8093, q, c, 8387, 1455, t, M, j, U, 7201, 7205, 445, B, u, 2929, w, e, I
Output (English): 3, 4, 6, 7, 10, 11, 12, 13, 17, 18, 20, 21, 22