C1111133313331323223313331333133313311211111211331311331333212233231121   >>    C111113331333132322331333133313331331121111121133131133133321223323112   <<    C1111133313331323223313331333133313311211111211331311331333212233231123   >>      C1111133313331323223313331333133313311211111211331311331333212233231122   >>