Task: Program Execution
Input (English): 7875, 2445, U, 4433, s, u, x, 8693, 45, 5421, 8861, 5175, e, h, 7241, u, 1863, K, 9137, P, r, 9323, 8229, 4453
Output (English): 7875, 2445, 4433, 8693, 45, 5421, 8861, 5175, 7241, 1863, 9137, 9323, 8229, 4453