Task: Program Execution
Input (English): 7, 20, ['F', '6615', 'X', '7555', '859', '8491', 'y', 'H', '6749', 'r', '8041', 'j', 'w', 'b', '409', '1113', 'A', '3759', 'f', '3739']
Output (English): 3739f3759A1113409bwj8041r6749Hy