CHAPITRE m. — si'i; i.F.s GiiorPF.s d'ouduk '2^ 5l 
pondant sont 
= (i, 3, 3, 4) (5, 6, 7, 8) (g, lo, 1 1, 12) (i3, i4, i5, 16 ) 
X (i-, 18, 19, 20) (21, 22, 23, 24) (20, 26, 27, 28) (29, 3o, 3i, 32), 
é== (i, 5, 3, 7) (2, 8, 4, 6) (9, i3, II, i5) (10, iG, 12, i4) 
X (17, 21, 19, 23) (18, 24, 20, 22) (25, 29, 27, 3i) (26, 32, 28, 3o), 
c— (1,9. 3, II) (2, ï-i, 4, 10) (5, i5, 7, i3) (6, i4, 8, 16) 
X (17, 20, 19, 27) (18, 28, 20, 26) (21, 3i, 23, 29) (22, 3o, 24, 32), 
r/= (i, 17, 3, 19) (2, 20, 4, 18) (5, 23, 7, 21) (6, 22, 8, 24) 
X (9, 27, II, 25)(io, 26, 12, 28) (i3, 29, 1.5, 3i)(i4, 32, 16. 3o). 
