Task: Program Execution
Input (English): 4407, 1769, e, T, C, 9921, U, P, E, 8385, 6703, 7751, n, C, c, a, b, X, i, Y, D, 2317, x
Output (English): 4407, 1769, 9921, 8385, 6703, 7751, 2317