Task: Program Execution
Input (English): 1, 7, ['B', '2131', '4009', 'R', '9677', 'x', 'F', 'n', '4037', '2489', '6267', 'C', 'x', 'Y', '259', '6649', '4007', 'k', 'c', 'T', 'o', '5607', 'i', 'g', 'U', '7607', '4647']
Output (English): Fx7769R90041312B