. ● . ● . ● . ● . ● . ● . ● . ● . . ● . ● . ● . 80 ● . ● 2 . ● . ● . ● . ● . ● . ● . ● . ● . ● . ● . ● . ● . ● 110 180 . ● 180 . ● 10 170 . ● . ● . ● . ● .