C1111121111331311211331333133313331313331323223313331311211312221   >>    C111112111133131121133133313331333131333132322331333131121131222   <<    C1111121111331311211331333133313331313331323223313331311211312223   >>      C1111121111331311211331333133313331313331323223313331311211312222   >>