5 letter words:
britt7,
orbit7,
robot7,
torot5,
4 letter words:
biro6,
bitt6,
boor6,
boot6,
bort6,
bott6,
brio6,
brit6,
broo6,
obit6,
otto4,
riot4,
root4,
roti4,
roto4,
tiro4,
toit4,
toot4,
tori4,
toro4,
tort4,
trio4,
trot4,
3 letter words:
bio5,
bit5,
boo5,
bot5,
bro5,
obi5,
orb5,
rib5,
rob5,
oot3,
ort3,
rot3,
tit3,
too3,
tor3,
tot3,
2 letter words:
bi4,
bo4,
it2,
oi2,
or2,
ti2,
to2,