5 letter words:
frump12,
4 letter words:
farm9,
frap9,
pram8,
puma8,
ramp8,
rump8,
faur7,
frau7,
arum6,
mura6,
prau6,
3 letter words:
fap8,
fum8,
amp7,
map7,
pam7,
ump7,
arf6,
auf6,
far6,
fra6,
fur6,
amu5,
arm5,
mar5,
par5,
pur5,
ram5,
rap5,
rum5,
urp5,
2 letter words:
fa5,
am4,
ma4,
mu4,
pa4,
um4,
up4,
ar2,
ur2,