C11111333133313232233133313331333133313331312111133133112111113331311212121   >>    C1111133313331323223313331333133313331333131211113313311211111333131121212   <<    C11111333133313232233133313331333133313331312111133133112111113331311212123   >>      C11111333133313232233133313331333133313331312111133133112111113331311212122   >>