Task: Program Execution
Input (English): c 2227 6011 1249 4175 f l o 9557 u 3949 q i a 437 p 3409 a e b 5045 z a 3807 8947 i 153 6843 235 3301
Output (English): a, b, c, e, f, i, l, o, p, q, u, z