> addvertex(T20,theory);

> addedge([T19,T20],theory);

> 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],[ T16,T18 ],[T19],[T20]];