y2vn x2vn40 w2vn4 v2vn u2vn40
9bvn40 8bvn4 7bvn 6bvn40 5bvn4
klun4 jlun ilun40 hlun4 glun
vutn uutn40 tutn4 sutn rutn40
63sn40 53sn4 43sn 33sn40 23sn4