C1111121111331311211331333133313331323132322331333132322232213121   >>    C111112111133131121133133313331333132313232233133313232223221312   <<    C1111121111331311211331333133313331323132322331333132322232213123   >>      C1111121111331311211331333133313331323132322331333132322232213122   >>