Maestro n° 097 : Page 87 - Gr 84
L3C5 =5= L2C5 -5-1- L2C5 =1= L2C9 -1- L5C9 =1=9= L5C9 -9- L8C9 =9=7= L8C9 -7- L8C7 =7= L1C7 -7-2- L1C7 =2= L3C9 donc L3C5 ≠ 2 et L3C9 ≠ 5