Task: Program Execution
Input (English): 7, 20, ['K', 'I', '8685', '4137', 'C', 'c', 'k', 'u', '2537', '6457', 'y', 'm', 'P', '3143', 'v', '6327', 'i', 'G', 'v', 'l', 'T', 't', 'T', '1', '8329', 'b', '8145', 'a']
Output (English): lvGi7236v3413Pmy75467352uk