Task: Program Execution
Input (English): 22, 23, ['6203', 'c', '9033', 'c', '4583', 'y', 'b', '4393', 'x', '7389', 'Y', '1699', '4203', 'd', '6847', 'p', 'u', 'Q', '3039', '7229', '4337', 'B', 'u', '1769']
Output (English): uB