Task: Program Execution
Input (English): a 6927 9843 w e w q x e 1319 5217 g 513 d k f j 4187 4977 i 2789 x r 9791 t k 5985 5535 a a 1775
Output (English): a, d, e, f, g, i, j, k, q, r, t, w, x