C11112331312111112111133133313331333132212111133133313331333132323213233111   >>    C1111233131211111211113313331333133313221211113313331333133313232321323311   <<    C11112331312111112111133133313331333132212111133133313331333132323213233113   >>      C11112331312111112111133133313331333132212111133133313331333132323213233112   >>