Task: Program Execution
Input (English): 6971, l, 4115, 8893, m, Y, c, 2477, Z, 6611, 2477, O, 7009, g, F, 1987, 1757, 9397, A, 9155, e, 6875, 3921
Output (English): 6971, 4115, 8893, 2477, 6611, 2477, 7009, 1987, 1757, 9397, 9155, 6875, 3921