Task: Program Execution
Input (English): f, M, 4323, 1261, O, 5479, D, 3187, m, U, c, 6735, 3693, 6611, 1629
Output (English): 6, 13, 4323, 1261, 15, 5479, 4, 3187, 13, 21, 3, 6735, 3693, 6611, 1629