C111112111133131121133133313331311331333131323133313232233132323231   >>    C11111211113313112113313331333131133133313132313331323223313232323   <<    C111112111133131121133133313331311331333131323133313232233132323233   >>      C111112111133131121133133313331311331333131323133313232233132323232   >>