Task: Program Execution
Input (English): 3751, 8083, t, 8407, 2493, 6723, L, 4901, 3407, 3151, 9535, 1755
Output (English): 3751, 8083, 20, 8407, 2493, 6723, 12, 4901, 3407, 3151, 9535, 1755