Task: Program Execution
Input (English): 575 u c 8113 2853 3661 9427 3071 4069 835 w t w t v g c 5497 1703 8433 g 3545 2887 z a 2241 5799 5915 u 4015 8327 z a w 8311 289 8575 t b 2873 r z x 1165 9881
Output (English): a, b, c, g, r, t, u, v, w, x, z