Task: Program Execution
Input (English): X, 4009, 5383, 5545, 9545, d, 4485, U, 1705, o, 1727, 3797, t, G, 1187, E, N, p, n, 1537, 7147, 4665, S
Output (English): 2, 3, 4, 5, 7, 9, 11, 12, 15, 20, 21, 22