The maximal graphs are:

1

0 1 0 1 1 1 1 0 0 
1 0 1 0 0 0 0 1 0 
0 1 0 1 0 0 0 0 0 
1 0 1 0 0 0 0 0 1 
1 0 0 0 0 0 0 0 0 
1 0 0 0 0 0 0 0 0 
1 0 0 0 0 0 0 1 1 
0 1 0 0 0 0 1 0 0 
0 0 0 1 0 0 1 0 0 


[-2.82843,-1,-1,-1,0,1,1,1,2.82843]



2

0 1 0 1 1 1 1 0 0 0 
1 0 1 0 0 0 0 0 0 0 
0 1 0 1 0 0 0 0 0 0 
1 0 1 0 0 0 0 1 1 1 
1 0 0 0 0 0 0 0 1 0 
1 0 0 0 0 0 0 0 0 1 
1 0 0 0 0 0 0 1 0 0 
0 0 0 1 0 0 1 0 0 0 
0 0 0 1 1 0 0 0 0 0 
0 0 0 1 0 1 0 0 0 0 


[-3,-1,-1,-1,-1,1,1,1,1,3]

