function r(i,n,s)return s..(i>9 and'print v1,v2,v3,v4,v5,v6,v7,v8,v9,v10\n'or'for v'..1+i..' = '..n..' to 9\n'..r(i+1,0,s..'  ')..s..'next\n')end;print(r(0,1,''))