Task: Program Execution
Input (English): 11, ['B', 'Y', '5177', '6075', '2289', 'd', '4395', 's', '8781', 's', '8109', 'c', 'j', '9743', 'i', '3483', '5345', 'x', '4431', 'S', 'k', 'o', 'w', '1213', '933']
Output (English): B, c, w