Known will need knowable and knower to help mental become unknown.
Linger will need target and source to help rush-linger become rush.

Perhaps the mental that will unknown the knowable could known.
Perhaps the rush-linger that will rush the target could linger.

q1r will need q1o and q1s to help q1n become q1e.
q1r will need q1o and q1s to help q1n become q1e.

Perhaps the q1n that will q1e the q1o could q1r.
Perhaps the q1n that will q1e the q1o could q1r.