Task: Program Execution
Input (English): 4, 20, ['Z', '3791', '8651', 'T', '8379', 'o', 'G', '6357', '5783', 'V', 'L', 'c', '457', '2369', '459', 's', '2827', '9467', 'i', 'B']
Output (English): Bi76497282s9549632754cLV38757536Go9738T