Task: Program Execution
Input (English): b 7755 a g 2157 c 7387 2167 x 3035 m 2825 4189 i t e o d 1601 5599 1231 m e n z x m i 7093 1445 4619 n c 8581 x
Output (English): a, b, c, d, e, g, i, m, n, o, t, x, z