Task: Program Execution
Input (English): o, 4603, W, 747, 1355, 675, 4197, E, Q, 6973, K, V, 3899, 6779, 4951, 6611, 5051, f, T, W, 2483
Output (English): 1, 3, 8, 9, 11, 12, 18, 19, 20