Task: Program Execution
Input (English): e, R, u, Q, 7057, x, 8915, R, 6627, x, B, 5619, X, 7417, 9547, 5629
Output (English): e, R, u, Q, x, R, x, B, X, 7057, 8915, 6627, 5619, 7417, 9547, 5629