Rush stimulates target but references source.
Stable stimulates substance but references corrode.

Linger wants source because rush needs target. linger will get source unless source is fixed on rush, this will cause target to find the rush-linger.
Disintegrate wants corrode because Stable needs substance. disintegrate will get corrode unless corrode is fixed on Stable, this will cause substance to find the eat.

q1e stimulates q1o but references q1s.
q1e stimulates q1o but references q1s.

q1r wants q1s because q1e needs q1o. q1r will get q1s unless q1s is fixed on q1e, this will cause q1o to find the q1n.
q1r wants q1s because q1e needs q1o. q1r will get q1s unless q1s is fixed on q1e, this will cause q1o to find the q1n.