5 letter words:
minus7,
munis7,
4 letter words:
fums9,
fins7,
funs7,
muni6,
muns6,
nims6,
unis4,
3 letter words:
fum8,
fin6,
fun6,
ifs6,
sif6,
ism5,
mis5,
mun5,
mus5,
nim5,
sim5,
sum5,
umu5,
ins3,
nis3,
nus3,
sin3,
sui3,
sun3,
uni3,
uns3,
2 letter words:
if5,
mi4,
mu4,
um4,
in2,
is2,
nu2,
si2,
un2,
us2,