Task: Program Execution
Input (English): i, 381, 8047, 7177, 1125, 3553, a, 139, 4009, l, i, Z, 2717, 9105, p, 7073, 5271, Q, 8747, R, 8085
Output (English): 1, 7, 10, 11, 12, 15, 18, 20