Task: Program Execution
Input (English): B, M, 1559, M, 2007, M, 8651, j, 5653, 437, s, P, 539, r, U, 8551, s, a, T, 3273, x, 6881, 3443
Output (English): 1, 2, 4, 6, 8, 11, 12, 14, 15, 17, 18, 19, 21