des (0, 32, 16)
(0, G3, 1)
(0, G4, 2)
(0, G1, 3)
(0, G2, 4)
(1, G4, 5)
(1, G1, 6)
(1, G2, 7)
(2, G3, 5)
(2, G1, 8)
(2, G2, 9)
(3, G3, 6)
(3, G4, 8)
(3, G2, 10)
(4, G3, 7)
(4, G4, 9)
(4, G1, 10)
(5, G1, 11)
(5, G2, 12)
(6, G4, 11)
(6, G2, 13)
(7, G4, 12)
(7, G1, 13)
(8, G3, 11)
(8, G2, 14)
(9, G3, 12)
(9, G1, 14)
(10, G3, 13)
(10, G4, 14)
(11, G2, 15)
(12, G1, 15)
(13, G4, 15)
(14, G3, 15)