C111123313121111121111331333133313331333132232233133313211232333132313331123231   >>    C11112331312111112111133133313331333133313223223313331321123233313231333112323   <<    C111123313121111121111331333133313331333132232233133313211232333132313331123233   >>      C111123313121111121111331333133313331333132232233133313211232333132313331123232   >>