> addvertex(T18,theory);

[Maple Math]

> addedge([AAA,T18],theory);

[Maple Math]

> addedge([PA,T18],theory);

[Maple Math]

> addedge([T17,T18],theory);

[Maple Math]

> partition:=[[I1,I2,RA,PS,Pra,AAA,SAS],[T1,T2,T3,`T6.5`,T5,T6,T8,`T8.5`,`T12.5`],[T4,T7,T9],[T10,T11],[T12,T13,T14,T15,T17,PA],[ T18,T16]];

[Maple Math]
[Maple Math]

>