This is a text document to make copy pasting the matrices easy.

Adjacency Matrix from the class book.

A=[0,1,0,0,0,0,0,0,1,0,0,0,0,0,0;0,0,1,0,1,0,1,0,0,0,0,0,0,0,0;0,1,0,0,0,1,0,1,0,0,0,0,0,0,0;0,0,1,0,0,0,0,0,0,0,0,1,0,0,0;1,0,0,0,0,0,0,0,0,1,0,0,0,0,0;0,0,0,0,0,0,0,0,0,1,1,0,0,0,0;0,0,0,0,0,0,0,0,0,1,1,0,0,0,0;0,0,0,1,0,0,0,0,0,0,1,0,0,0,0;0,0,0,0,1,1,0,0,0,1,0,0,0,0,0;0,0,0,0,0,0,0,0,0,0,0,0,1,0,0;0,0,0,0,0,0,0,0,0,0,0,0,0,0,1;0,0,0,0,0,0,1,1,0,0,1,0,0,0,0;0,0,0,0,0,0,0,0,1,0,0,0,0,1,0;0,0,0,0,0,0,0,0,0,1,1,0,1,0,1;0,0,0,0,0,0,0,0,0,0,0,1,0,1,0]

Adjacency Matrix for the class website. Copy paste all lines all at once.
ClassAdj=zeros(20,20);
ClassAdg(1,5)=1;
ClassAdg(1,11)=1;
ClassAdg(1,19)=1;
ClassAdg(1,16)=1;
ClassAdg(3,20)=1;
ClassAdg(4,20)=1;
ClassAdg(5,20)=1;
ClassAdg(6,20)=1;
ClassAdg(14,20)=1;
ClassAdg(18,20)=1;
ClassAdg(19,20)=1;
ClassAdg(20,:)=1;
ClassAdg(20,20)=0;
ClassAdg(4,9)=1;
ClassAdg(5,12)=1;
ClassAdg(7,9)=1;
ClassAdg(7,11)=1;
ClassAdg(10,3)=1;
ClassAdg(10,9)=1;
ClassAdg(11,14)=1;
ClassAdg(11,17)=1;
ClassAdg(11,10)=1;
ClassAdg(11,19)=1;
ClassAdg(12,18)=1;
ClassAdg(12,9)=1;
ClassAdg(14,11)=1;
ClassAdg(17,3)=1;
ClassAdg(17,4)=1;
ClassAdg(17,10)=1;
ClassAdg(17,11)=1;
ClassAdg(17,7)=1;
ClassAdg(17,14)=1;

If you want to use the GMatrixMaker program, the diagonal of the class adjacency matrix needs to be ones. To do that copy paste the additional lines all at once.

ClassAdg(1,1)=1;
ClassAdg(2,2)=1;
ClassAdg(3,3)=1;
ClassAdg(4,4)=1;
ClassAdg(5,5)=1;
ClassAdg(6,6)=1;
ClassAdg(7,7)=1;
ClassAdg(8,8)=1;
ClassAdg(9,9)=1;
ClassAdg(10,10)=1;
ClassAdg(11,11)=1;
ClassAdg(12,12)=1;
ClassAdg(13,13)=1;
ClassAdg(14,14)=1;
ClassAdg(15,15)=1;
ClassAdg(16,16)=1;
ClassAdg(17,17)=1;
ClassAdg(18,18)=1;
ClassAdg(19,19)=1;
ClassAdg(20,20)=1;