Task: Program Execution
Input (English): 8591, L, 2513, U, 8165, N, 7247, 6357, y, 4259, 789, H, 4345, z, G
Output (English): 8591, 12, 2513, 21, 8165, 14, 7247, 6357, 25, 4259, 789, 8, 4345, 26, 7