Virtuose n° 115 : Page 82 - Gr 79
L1C2 -3- L1C8 =3= L3C8 -3-5- L3C8 =5= L7C8 -5-6- L7C8 =6= L7C3 -6- L1C3 =6= L1C2 donc L1C2 ≠ 3