5 letter words:
bison7,
bonus7,
bosun7,
4 letter words:
bins6,
bios6,
buns6,
ibis6,
nibs6,
nobs6,
nubs6,
obis6,
snib6,
snob6,
snub6,
ions4,
nisi4,
nous4,
onus4,
3 letter words:
bin5,
bio5,
bis5,
bos5,
bun5,
bus5,
nib5,
nob5,
nub5,
obi5,
sib5,
sob5,
sub5,
ins3,
ion3,
nos3,
nus3,
ons3,
sin3,
son3,
sou3,
sun3,
uns3,
2 letter words:
bi4,
bo4,
in2,
is2,
no2,
nu2,
oi2,
on2,
os2,
si2,
so2,
un2,
us2,