Task: Program Execution
Input (English): 5153, f, Y, o, 607, G, s, S, J, 1425, M, 5345, g, 6213, n, d, 6243, T, o, a, p
Output (English): 2, 3, 4, 6, 7, 8, 9, 11, 13, 15, 16, 18, 19, 20, 21