C1111121111331311211331333133313331322133313331311331333132231233112121   >>    C111112111133131121133133313331333132213331333131133133313223123311212   <<    C1111121111331311211331333133313331322133313331311331333132231233112123   >>      C1111121111331311211331333133313331322133313331311331333132231233112122   >>