6 letter words:
kronor10,
pronto8,
proton8,
torpor8,
5 letter words:
brook11,
kroon9,
boron7,
porno7,
robot7,
troop7,
rotor5,
4 letter words:
bonk10,
book10,
bork10,
knob10,
knop10,
kobo10,
pork10,
knot8,
koto8,
nook8,
rook8,
took8,
boon6,
boor6,
boot6,
born6,
bort6,
broo6,
poon6,
poor6,
porn6,
port6,
topo6,
trop6,
onto4,
root4,
roto4,
toon4,
torn4,
toro4,
torr4,
3 letter words:
kob9,
kop9,
bop7,
kor7,
boo5,
bot5,
bro5,
brr5,
nob5,
opt5,
orb5,
poo5,
pot5,
pro5,
rob5,
top5,
noo3,
nor3,
not3,
ono3,
oot3,
ort3,
rot3,
ton3,
too3,
tor3,
2 letter words:
bo4,
op4,
no2,
on2,
or2,
to2,