Task: Program Execution
Input (English): 4, 21, ['j', 'k', 'W', '1625', 'Y', '7815', 'q', '415', '3947', '4545', 'K', '3779', '7361', '2469', '3397', 'Y', '4909', 'D', 'Y', '6171', 'T', '7443']
Output (English): T6171YD4909Y3397246973613779K45453947415q7815Y1625