when relating to promote-demote, understanding demote makes me think of target, which allows promote to make sense of source.
when relating to accomplish, understanding finish makes me think of performance, which allows start to make sense of ability.

I would promote the target but I demote instead because of my own source.
I would start the performance but I finish instead because of my own ability.

when relating to q1n, understanding q1r makes me think of q1o, which allows q1e to make sense of q1s.
when relating to q1n, understanding q1r makes me think of q1o, which allows q1e to make sense of q1s.

I would q1e the q1o but I q1r instead because of my own q1s.
I would q1e the q1o but I q1r instead because of my own q1s.