Task: Program Execution
Input (English): 4, 28, ['8621', '7449', '9205', '3095', '6933', 'u', 'H', 'd', 'V', '8965', 'y', '795', 'c', 'X', 'A', '3629', 'a', 'u', 'q', 'b', '3015', '9577', '939', '3787', '8381', 'x', '661', '6987', '4807']
Output (English): 6987661x8381378793995773015bqua3629AXc795y8965VdHu69333095