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.
The two types of locations are absolute and relative! Best of luck!
They already had Britain as an example as what to do and had Britain's inventions so they didn't need to invent anything, just use the inventions Britain thought of