hi all.
i've looked high and low and cannot figure out what "e-m" or "e-t" mean
in the example below. both cleasby and zoëga contain this notation.
could someone enlighten me?

example from zoëga:
hlotnast (ađ), v. refl. to fall to one's lot (e-m hlotnast e-t).

other unknowns include "e-s" and "e-u".

hoping i don't feel *too* dumb once i learn the answer,
nall.