Maestro n° 086 : Page 57 - Gr 54
L3C8 =2= L3C2 -2-5- L3C2 =5= L5C2 -5- L5C7 =5=6= L5C7 -6- L5C8 =6= L7C8 -6-2- L7C8 =2= L7C2 donc L3C2 et L7C8 ≠ 2