Empye [1633]
Bij [1648]
abij; bee [1684]
mbi [1755]
Mbee [1824] water
Comments
The /m/ tends to be whispered, and the /p/ tends to be voiced, sounding much like /b/.
NOTE: The word comes from Proto-Algonquian /*nepi/. The asterisk denotes a form inferred but undocumented.