6 letter words:
furfur12,
5 letter words:
ahuru8,
hurra8,
4 letter words:
haff13,
huff13,
hauf10,
raff10,
ruff10,
faur7,
frau7,
furr7,
ruru4,
3 letter words:
aff9,
fah9,
arf6,
auf6,
far6,
fra6,
fur6,
rah6,
2 letter words:
ah5,
fa5,
ha5,
uh5,
ar2,
ur2,