C1111121111331311211331333133313331313331323223313232233132313222221   >>    C111112111133131121133133313331333131333132322331323223313231322222   <<    C1111121111331311211331333133313331313331323223313232233132313222223   >>      C1111121111331311211331333133313331313331323223313232233132313222222   >>