Task: Program Execution
Input (English): y, 4877, v, Z, I, 4781, 7905, h, 2727, 7337, 7693, U, u, y, 2509, Q, v, h, 9985, 8049, C, 4809, L
Output (English): 2, 6, 7, 9, 10, 11, 15, 19, 20, 22