6 letter words:
biform13,
5 letter words:
kimbo13,
brook11,
fibro10,
bromo9,
broom9,
iroko9,
koori9,
morro7,
4 letter words:
firk11,
fork11,
birk10,
boko10,
book10,
bork10,
brik10,
kobo10,
mirk10,
moki10,
moko10,
mook10,
firm9,
forb9,
form9,
frib9,
from9,
mofo9,
boom8,
borm8,
brim8,
koro8,
rook8,
roof7,
biro6,
birr6,
boor6,
brio6,
broo6,
miro6,
mooi6,
moor6,
room6,
3 letter words:
kif10,
bok9,
kob9,
fib8,
fob8,
irk7,
kir7,
koi7,
kor7,
mib7,
mob7,
oik7,
rok7,
fir6,
for6,
fro6,
oof6,
orf6,
rif6,
bio5,
boi5,
boo5,
bor5,
bro5,
brr5,
mir5,
moi5,
moo5,
mor5,
obi5,
obo5,
oom5,
orb5,
rib5,
rim5,
rob5,
rom5,
oor3,
roo3,
2 letter words:
ki6,
ko6,
if5,
of5,
bi4,
bo4,
mi4,
mo4,
ob4,
om4,
io2,
oi2,
oo2,
or2,