7 letter words:
surfman12,
6 letter words:
fanums11,
furans9,
unarms8,
5 letter words:
fanum10,
farms10,
fauns8,
furan8,
snafu8,
snarf8,
arums7,
manus7,
muras7,
ramus7,
unarm7,
4 letter words:
farm9,
arfs7,
fans7,
faun7,
funs7,
furs7,
surf7,
amus6,
arms6,
arum6,
mans6,
mars6,
maun6,
muns6,
mura6,
rams6,
rums6,
anus4,
runs4,
sura4,
urns4,
ursa4,
3 letter words:
arf6,
fan6,
far6,
fas6,
fun6,
fur6,
amu5,
arm5,
man5,
mar5,
mas5,
mun5,
mus5,
nam5,
ram5,
rum5,
sum5,
ars3,
nus3,
ran3,
ras3,
run3,
sau3,
sun3,
uns3,
urn3,
2 letter words:
fa5,
am4,
ma4,
mu4,
um4,
an2,
ar2,
as2,
na2,
nu2,
un2,
us2,