Task: Program Execution
Input (English): B, r, G, 4333, Y, 497, P, 295, E, 5089, k, 2057, 3961, W, b, 4819, R, C, B, 6963, 8533, 5503, x, R
Output (English): 1, 2, 3, 5, 7, 9, 11, 14, 15, 17, 18, 19, 23, 24