C11112331312111112111133133313331333132212111133133313331333131133133322333121   >>    C1111233131211111211113313331333133313221211113313331333133313113313332233312   <<    C11112331312111112111133133313331333132212111133133313331333131133133322333123   >>      C11112331312111112111133133313331333132212111133133313331333131133133322333122   >>