C111123313121111121111331333133313331333132232233131211111211111121232321   >>    C11112331312111112111133133313331333133313223223313121111121111112123232   <<    C111123313121111121111331333133313331333132232233131211111211111121232323   >>      C111123313121111121111331333133313331333132232233131211111211111121232322   >>