4 letter words:
gnus5,
gons5,
guns5,
nogs5,
snog5,
snug5,
song5,
sung5,
nous4,
onus4,
3 letter words:
gnu4,
gon4,
gos4,
gun4,
gus4,
nog4,
sog4,
ugs4,
nos3,
nus3,
ons3,
ous3,
son3,
sou3,
sun3,
uns3,
2 letter words:
go3,
gu3,
ug3,
no2,
nu2,
on2,
os2,
ou2,
so2,
un2,
us2,