Task: Program Execution
Input (English): t, 7851, 7447, 8481, 3417, 503, 6587, 4161, b, 5357, 1885, m, 4281, C, 6265, S, x, 3797, 6151, R, q, 757, c
Output (English): 1, 9, 12, 14, 16, 17, 20, 21, 23