Task: Program Execution
Input (English): J, 2157, 5325, 3895, 1513, 6431, L, 5531, 9567, z, 6047, 6833, 3013, 675, F, 3379, 1349, 8555, 5683, l, 5447, z
Output (English): J, L, z, F, l, z, 2157, 5325, 3895, 1513, 6431, 5531, 9567, 6047, 6833, 3013, 675, 3379, 1349, 8555, 5683, 5447