Task: Program Execution
Input (English): r q j l q a 8119 c n 9443 c x 8625 4973 4829 9255 5733 4781 2459 e i 9333 9135 i o s 5527 z x 2381 6349 6995 t 3939 u 4731 3163 2019 u u g v v x b
Output (English): a, b, c, e, g, i, j, l, n, o, q, r, s, t, u, v, x, z