Task: Program Execution
Input (English): q, 6481, l, 7861, 6355, x, 169, 7039, 5777, 855, L, 3509, 8271, K, U, 3439, S, g, 3255, 9255, G
Output (English): q, l, x, L, K, U, S, g, G, 6481, 7861, 6355, 169, 7039, 5777, 855, 3509, 8271, 3439, 3255, 9255