5 letter words:
bizzo25,
4 letter words:
zori13,
birk10,
bork10,
brik10,
biro6,
brio6,
3 letter words:
ziz21,
biz14,
riz12,
bok9,
kob9,
irk7,
kir7,
koi7,
kor7,
oik7,
rok7,
bio5,
boi5,
bor5,
bro5,
obi5,
orb5,
rib5,
rob5,
2 letter words:
zo11,
ki6,
ko6,
bi4,
bo4,
ob4,
io2,
oi2,
or2,