Task: Program Execution
Input (English): l 977 c x 3019 9531 q V a 7289 1265 691 3015 d 9525 4079 U w 4455 8277 t 67 5231 W 5387 9417 a 3077
Output (English): l, c, x, q, V, a, d, U, w, t, W, a