Task: Program Execution
Input (English): 6547, 6273, 9457, 2289, 4693, s, J, C, Y, 1549, w, I, k, Q, u, M, B, U, 9243, 5489, X, 9171, 53, 641
Output (English): s, J, C, Y, w, I, k, Q, u, M, B, U, X