Bonjour
L1 = 5/8, 1/2, 7/2, 5, 3/4, 4/3, 2/7, 2/3, 1/4,2
L 2 = 4/3, 5/8, 1/5, 1/4, 2/3, 7/2, 1/2, 8/5, 2, 3/4
L3 = 1/2, 1/3, 2/3, 3/4, 2, 5/8, 4/3, 7/2, 3/2, 1/4
L4 = 1/6, 3/4, 6, 2/3, 1/4, 1/2, 7/2, 5/8, 4/3, 1/3
