C11112331312111112111133133313331333133112111113331333133313331323233123331   >>    C1111233131211111211113313331333133313311211111333133313331333132323312333   <<    C11112331312111112111133133313331333133112111113331333133313331323233123333   >>      C11112331312111112111133133313331333133112111113331333133313331323233123332   >>