Task: Program Execution
Input (English): 6, 12, ['4371', 'X', '915', '7943', 'o', 'r', '3429', 'r', '4023', 'G', 'W', 'C', 'T', '5155', 'k', 'e', '309', '9137', '9189', 'D', 'Z', 'P', '4405', '111', 'r', '6033', 'y']
Output (English): r3429r4023GWC