C11112331312111112111133133313331333133112111113331333133313331333133312121131   >>    C1111233131211111211113313331333133313311211111333133313331333133313331212113   <<    C11112331312111112111133133313331333133112111113331333133313331333133312121133   >>      C11112331312111112111133133313331333133112111113331333133313331333133312121132   >>