7 letter words:
nocuous9,
5 letter words:
conus7,
coons7,
uncos7,
uncus7,
4 letter words:
cons6,
coon6,
coos6,
unco6,
nous4,
onos4,
onus4,
soon4,
3 letter words:
con5,
coo5,
cos5,
noo3,
nos3,
nus3,
ono3,
ons3,
son3,
sou3,
sun3,
uns3,
2 letter words:
no2,
nu2,
on2,
os2,
so2,
un2,
us2,
