Task: Program Execution
Input (English): 1, 7, ['N', '9277', '4227', '1793', 'c', 'u', 't', 'j', 'C', '7961', '9281', 'u', '5549', 'Y', 'F', '955', 'l', '4059', 'W', '9305', '3129', 'd', '2997', '4523']
Output (English): N, j, F, d