C111123313121111121111331333133313121111113223313331333131333132232223221   >>    C11112331312111112111133133313331312111111322331333133313133313223222322   <<    C111123313121111121111331333133313121111113223313331333131333132232223223   >>      C111123313121111121111331333133313121111113223313331333131333132232223222   >>