4 letter words:
book10,
bulk10,
kobo10,
kolo8,
koto8,
look8,
took8,
blot6,
bolo6,
bolt6,
boot6,
bout6,
lobo6,
obol6,
loot4,
lout4,
tolu4,
tool4,
3 letter words:
kob9,
boo5,
bot5,
but5,
lob5,
tub5,
loo3,
lot3,
oot3,
out3,
too3,
2 letter words:
bo4,
lo2,
to2,
ut2,