Task: Program Execution
Input (English): 3, 21, ['4681', 'I', '7639', 'N', 't', 'K', 'W', 'H', 'B', 'g', '7659', 'A', '1901', '8781', '2333', 'M', 'i', '1029', 'W', 'G', '3783', 'J', 'N', 'o', 'l', 'J', 'Y', 'n', '1463']
Output (English): 3783GW1029iM233387811901A7659gBHWKtN7639