5 letter words:
brook11,
bunko11,
korun9,
kroon9,
boron7,
bourn7,
4 letter words:
zonk17,
zouk17,
bozo15,
orzo13,
ouzo13,
zoon13,
bonk10,
book10,
bork10,
bunk10,
knob10,
kobo10,
knur8,
nook8,
rook8,
boon6,
boor6,
born6,
broo6,
burn6,
3 letter words:
zoo12,
kob9,
kor7,
boo5,
bro5,
bun5,
bur5,
nob5,
nub5,
orb5,
rob5,
rub5,
urb5,
noo3,
nor3,
ono3,
our3,
run3,
urn3,
2 letter words:
bo4,
no2,
nu2,
on2,
or2,
un2,