Task: Program Execution
Input (English): 5, 21, ['8153', 'B', 'm', 'E', 'i', '1741', '9641', '767', 'x', '6865', '8179', '7415', 'J', 'P', 'A', '3265', '9227', '9421', 'n', 'W', '1449']
Output (English): 9441Wn124972295623APJ514797185686x76714691471i