Task: Program Execution
Input (English): 7365 1865 w 7027 g 6737 6309 6857 i l z 4739 1515 m h 6117 k 5915 w 2101 x 7963 413 a 1155 3235 c 6911 4131 3305 n u 2699 1941 6287 9369 t j u 2087 545 8675 l 7965
Output (English): a, c, g, h, i, j, k, l, m, n, t, u, w, x, z