Task: Program Execution
Input (English): 9, 13, ['1561', 'W', 'f', '8251', '6695', '4969', '983', 'E', 'w', 'd', '5303', '9969', 'B', 'o', '9787', 'V', '8331', 'A']
Output (English): w, d, 5303, 9969, B