Modifications

a4--a5--a6--a7--a8--a9;d2--b3--b4--b5;e2--c3--c4--c5;a1--d2--d3--d4--d5--d6;a1--a2e2--a3e3--a4e4--a5e5--a6e6;d6--a7;e6--a8a7;b5--a9a6;b3c5--a6;b4--b5a5;c4--a5;b3--a4;c3--a4;d3--b4;e3--c4;d4--b5;e4--c5;a1[shape=box label="Noeud 1a1" href="[[#Noeud 1a1]]" pos="0,9!"]a2a4[shape=box label="Noeud 2a4" href="[[#Noeud 2a4]]" pos="0,86!"]a3a5[shape=box label="Noeud 3a5" href="[[#Noeud 3a5]]" pos="0,75!"]a4a6[shape=box label="Noeud 4a6" href="[[#Noeud 4a6]]" pos="0,64!"]a5a7[shape=box label="Noeud 5a7" href="[[#Noeud 5a7]]" pos="0,53!"]a6a8[shape=box label="Noeud 6a8" href="[[#Noeud 6a8]]" pos="0,42!"]a7a9[shape=box label="Noeud 7a9" href="[[#Noeud 7a9]]" pos="0,31!"]a8b3[shape=box label="Noeud 8b3" href="[[#Noeud 8b3]]" pos="01,27!"]a9b4[shape=box label="Noeud 9b4" href="[[#Noeud 9b4]]" pos="01,6!"]b5[shape=box label="Noeud b5" href="[[#Noeud b5]]" pos="1,5!"]b3c3[shape=box label="Noeud 3c3" href="[[#Noeud 3c3]]" pos="-1,7!"]b4c4[shape=box label="Noeud 4c4" href="[[#Noeud 4c4]]" pos="-1,6!"]b5c5[shape=box label="Noeud c5" href="[[#Noeud c5]]" pos="-1,5!"]d2[shape=box label="Noeud d2" href="[[#Noeud d2]]" pos="2,8!"]d3[shape=box label="Noeud d3" href="[[#Noeud d3]]" pos="2,7!"]d4[shape=box label="Noeud d4" href="[[#Noeud d4]]" pos="2,6!"]d5[shape=box label="Noeud d5" href="[[#Noeud d5]]" pos="2,5!"]d6[shape=box label="Noeud d6" href="[[#Noeud d5]]" pos="2,4!"]e2[shape=box label="Noeud e2" href="[[#Noeud e2]]" pos="1-2,8!"]e3[shape=box label="Noeud e3" href="[[#Noeud e3]]" pos="-2,7!"]e4[shape=box label="Noeud e4" href="[[#Noeud e4]]" pos="-2,6!"]e5[shape=box label="Noeud e5" href="[[#Noeud e5]]" pos="-2,5!"]e6[shape=box label="Noeud e6" href="[[#Noeud e6]]" pos="-2,4!"]

=Noeud Niveau 1===Noeud a1===Niveau 2===Noeud d2====Noeud e2===Niveau 3===Noeud b3====Noeud c3====Noeud d3====Noeud e3===Etc...=