5 letter words:
brook11,
iroko9,
koori9,
broil7,
brool7,
oboli7,
4 letter words:
kirk12,
klik12,
kook12,
bilk10,
birk10,
boko10,
book10,
bork10,
brik10,
kobo10,
kilo8,
kolo8,
koro8,
lirk8,
look8,
rook8,
birl6,
biro6,
boil6,
bolo6,
bool6,
boor6,
brio6,
broo6,
lobi6,
lobo6,
obol6,
loir4,
loor4,
olio4,
roil4,
3 letter words:
bok9,
kob9,
ilk7,
irk7,
kir7,
koi7,
kor7,
oik7,
rok7,
bio5,
boi5,
boo5,
bor5,
bro5,
lib5,
lob5,
obi5,
obo5,
orb5,
rib5,
rob5,
loo3,
lor3,
oil3,
oor3,
roo3,
2 letter words:
ki6,
ko6,
bi4,
bo4,
ob4,
io2,
li2,
lo2,
oi2,
oo2,
or2,