ph
8o1oo
1oo1oo1oo1oo9o1oo8o1oo8o1oo8o1oo8o1oo5o1oo
1oo1+1oo2+9o3+8o4+8o5+8o6+8o7+5o8=273o
8o1oo8o
6o
1oo