C1111121111331311211331333133313331313331323311211113313231323331323211221   >>    C111112111133131121133133313331333131333132331121111331323132333132321122   <<    C1111121111331311211331333133313331313331323311211113313231323331323211223   >>      C1111121111331311211331333133313331313331323311211113313231323331323211222   >>