Task: Program Execution
Input (English): 9527 7451 5169 2351 l j 7201 2335 4601 2395 u 1337 5601 4773 o v 7651 b 9345 5117 k n 4983 1453 3 x 3429 o i
Output (English): b, i, j, k, l, n, o, u, v, x