Task: Program Execution
Input (English): N, a, 6769, L, 3601, 1725, y, 7411, 6767, d, 5243, T, d, t, u, 5569, 4401, 7371, U
Output (English): N, a, L, y, d, T, d, t, u, U, 6769, 3601, 1725, 7411, 6767, 5243, 5569, 4401, 7371