C11112331312111112111133133313331333132212111133133313331333132321121   >>    C1111233131211111211113313331333133313221211113313331333133313232112   <<    C11112331312111112111133133313331333132212111133133313331333132321123   >>      C11112331312111112111133133313331333132212111133133313331333132321122   >>