7 letter words:
robotic11,
burrito9,
6 letter words:
rubric10,
octroi8,
5 letter words:
boric9,
cubit9,
bruit7,
burro7,
court7,
cruor7,
curio7,
orbit7,
robot7,
toric7,
turbo7,
rotor5,
4 letter words:
crib8,
curb8,
biro6,
birr6,
boor6,
boot6,
bort6,
bout6,
brio6,
brit6,
broo6,
brut6,
burr6,
coir6,
coot6,
crit6,
curr6,
curt6,
obit6,
otic6,
torc6,
uric6,
riot4,
root4,
roti4,
roto4,
rout4,
tiro4,
tori4,
toro4,
torr4,
tour4,
trio4,
3 letter words:
cob7,
cub7,
bio5,
bit5,
boo5,
bot5,
bro5,
brr5,
bur5,
but5,
coo5,
cor5,
cot5,
cru5,
cur5,
cut5,
obi5,
orb5,
orc5,
rib5,
rob5,
roc5,
rub5,
tic5,
tub5,
urb5,
oot3,
ort3,
our3,
out3,
rot3,
rut3,
too3,
tor3,
tui3,
2 letter words:
bi4,
bo4,
it2,
oi2,
or2,
ti2,
to2,
ut2,