5 letter words:
besot7,
boost7,
boots7,
oboes7,
4 letter words:
best6,
bets6,
boos6,
boot6,
bots6,
obes6,
oboe6,
stob6,
oots4,
soot4,
toes4,
3 letter words:
bes5,
bet5,
boo5,
bos5,
bot5,
obe5,
sob5,
oes3,
oot3,
ose3,
set3,
sot3,
toe3,
too3,
2 letter words:
be4,
bo4,
es2,
et2,
oe2,
os2,
so2,
to2,