4 letter words:
farm9,
firm9,
fair7,
fiar7,
amir6,
arum6,
mair6,
mura6,
rami6,
3 letter words:
arf6,
far6,
fir6,
fur6,
rif6,
aim5,
ami5,
amu5,
arm5,
mar5,
mir5,
ram5,
rim5,
rum5,
air3,
rai3,
ria3,
2 letter words:
fa5,
if5,
am4,
ma4,
mi4,
mu4,
um4,
ai2,
ar2,