Maestro n° 099 : Page 86 - Gr 83
L3C3 =6=1= L3C3 -1- L2C123 =1= L2C9 -1-4- L2C9 =4= L3C9 -4-6- L3C9 =6= L1C89 donc L1C12 et L3C9 ≠ 6