Task: Program Execution
Input (English): 6895 q 2897 a v c 1507 4647 9569 133 3665 v u 6235 7109 v n 3285 5359 9913 5883 c 5445 a 9605 z x 1283 a 7887 h
Output (English): a, c, h, n, q, u, v, x, z