7 letter words:
frenums12,
surfmen12,
6 letter words:
frumps13,
femurs11,
frenum11,
fumers11,
prunes8,
rumens8,
5 letter words:
frump12,
femur10,
fumer10,
fumes10,
perms9,
rumps9,
sperm9,
spume9,
ferns8,
menus7,
mures7,
muser7,
neums7,
prune7,
purse7,
rumen7,
serum7,
sprue7,
spurn7,
super7,
nurse5,
runes5,
4 letter words:
fems9,
fume9,
perm8,
rump8,
sump8,
umps8,
enuf7,
fens7,
fern7,
feus7,
funs7,
furs7,
fuse7,
refs7,
serf7,
surf7,
emus6,
menu6,
muns6,
mure6,
muse6,
neum6,
pens6,
puns6,
pure6,
purs6,
rems6,
reps6,
rums6,
spue6,
spun6,
spur6,
supe6,
urps6,
erns4,
rues4,
rune4,
runs4,
ruse4,
suer4,
sure4,
urns4,
user4,
3 letter words:
fem8,
ump7,
efs6,
fen6,
fer6,
fes6,
feu6,
fun6,
fur6,
ref6,
ems5,
emu5,
men5,
mun5,
mus5,
pen5,
per5,
pes5,
pun5,
pur5,
pus5,
rem5,
rep5,
rum5,
sum5,
sup5,
ups5,
urp5,
ens3,
ern3,
ers3,
nus3,
res3,
rue3,
run3,
sen3,
ser3,
sue3,
sun3,
uns3,
urn3,
use3,
2 letter words:
ef5,
fe5,
em4,
me4,
mu4,
pe4,
um4,
up4,
en2,
er2,
es2,
ne2,
nu2,
re2,
un2,
us2,