Task: Program Execution
Input (English): 3, 20, ['L', '3675', '4921', 'd', 'S', 'M', '8139', '9325', 'J', '4299', '2901', 'U', '3827', '9293', 'x', '1909', '253', '8379', 'j', 'N', 'l', 'B', 'x']
Output (English): N, j, 8379, 253, 1909, x, 9293, 3827, U, 2901, 4299, J, 9325, 8139, M, S, d, 4921