(6/2 , 6/2)
(18/2 , 4/2)
(12/3 , 20/5)
(12/2 , 25/5)
(11/11 , 20/2)
(9/3 , 14/7)
(21/3 , 8)
(24/2 , 8)
(30/2 , 1)
(13 , 12/2)
(18 , 24/3)
(16 , 27/3)
