Task: Program Execution
Input (English): 1, 8, ['4897', '831', '295', '5459', 'W', 'F', '4071', 'e', '7917', '1937', '4073', '101', '4643', 'H', 'g', 'D', 'O', '3949', '6331', '5521', '8331', 'P', 'B', 'N', '415', '1349']
Output (English): 4897, 7917, O, 415