Task: Program Execution
Input (English): G, G, 3399, R, 4321, 5175, t, 9495, 1769, Z, 8379, 4101, 9017, 7057, M, 1219, 4931, 451, V, 1725, f, L
Output (English): 3, 5, 6, 8, 9, 11, 12, 13, 14, 16, 17, 18, 20