C1111121111331311211331333133313331313331323311211111211111223323221   >>    C111112111133131121133133313331333131333132331121111121111122332322   <<    C1111121111331311211331333133313331313331323311211111211111223323223   >>      C1111121111331311211331333133313331313331323311211111211111223323222   >>