7 letter words:
biotron9,
6 letter words:
borzoi17,
zorino15,
bonito8,
5 letter words:
bortz16,
rozit14,
trooz14,
biont7,
boron7,
inorb7,
oobit7,
orbit7,
robin7,
robot7,
intro5,
nitro5,
nooit5,
roton5,
4 letter words:
bozo15,
zobo15,
orzo13,
ritz13,
zoon13,
zoot13,
zori13,
bint6,
biro6,
bito6,
boon6,
boor6,
boot6,
born6,
bort6,
brin6,
brio6,
brit6,
broo6,
obit6,
inro4,
into4,
iron4,
noir4,
nori4,
oint4,
onto4,
oont4,
riot4,
roin4,
ront4,
roon4,
root4,
roti4,
roto4,
tiro4,
toon4,
tori4,
torn4,
toro4,
trin4,
trio4,
tron4,
3 letter words:
biz14,
riz12,
zin12,
zit12,
zoo12,
bin5,
bio5,
bit5,
boi5,
bon5,
boo5,
bor5,
bot5,
bro5,
nib5,
nob5,
obi5,
obo5,
orb5,
rib5,
rob5,
ion3,
nit3,
noo3,
nor3,
not3,
ono3,
oon3,
oor3,
oot3,
ort3,
rin3,
rit3,
roo3,
rot3,
tin3,
ton3,
too3,
tor3,
2 letter words:
zo11,
bi4,
bo4,
ob4,
in2,
io2,
it2,
no2,
oi2,
on2,
oo2,
or2,
ti2,
to2,