C11111333133313232233133313331333133313331312111133133112111113331333131131231   >>    C1111133313331323223313331333133313331333131211113313311211111333133313113123   <<    C11111333133313232233133313331333133313331312111133133112111113331333131131233   >>      C11111333133313232233133313331333133313331312111133133112111113331333131131232   >>