Task: Program Execution
Input (English): 5131 4695 5537 j t 7429 2113 3277 9143 r j i 8229 9541 n 5851 t 3159 b 8867 81 e t n z 7021 w a 7213 d f 3273 x d 8643 u 9757 1533 691 b 3185 4571
Output (English): a, b, d, e, f, i, j, n, r, t, u, w, x, z