C11112331312111112111133133313331333132323213331333132212111121   >>    C1111233131211111211113313331333133313232321333133313221211112   <<    C11112331312111112111133133313331333132323213331333132212111123   >>      C11112331312111112111133133313331333132323213331333132212111122   >>