When pn is in the middle of a word, as in the term orthopnea, the primary accent is on?

I believe the answer is: pn

Primary accents would determine the the strongest emphasis within the word when it is verbally spoken. When people who do not understand the language hear the word, they would most likely hear the 'pn' part to be in the strongest volume compared to the other parts.

thomas jefferson. establishing a federal republic. although thomas jefferson was in france serving as united states minister when the federal constitution was written in 1787, he was able to influence the development of the federal government through his correspondence.