T1:=count(v ref(v,1)*2 ,4)=1;
t2:=count(v ref(v,1) and l min(l,4) and l ref(l,1),3)=3 ;
t3:t1 and t2;
T1:=count(v ref(v,1)*2 ,4)=1;
t2:=count(v ref(v,1) and l min(l,4) and l ref(l,1),3)=3 ;
t3:t1 and t2;
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