♣♣ ♣♣ ♣♣.♣.♣♣ ♣ ♣♣♣♣.....♣.♣ ♣..........♣♣ ♣....∩.....♣ ♣..........♣ ♣....∩....♣♣ ♣.........♣ ♣........♣♣ ♣♣##+++##♣