4 letter words:
humf12,
hauf10,
farm9,
harm9,
huma9,
faur7,
frau7,
arum6,
mura6,
3 letter words:
fah9,
fum8,
ham8,
hum8,
arf6,
auf6,
far6,
fra6,
fur6,
rah6,
amu5,
arm5,
mar5,
ram5,
rum5,
2 letter words:
hm7,
ah5,
fa5,
ha5,
uh5,
am4,
ma4,
mu4,
um4,
ar2,
ur2,