9 letter words:
doorknock20,
7 letter words:
jannock20,
jonnock20,
dornock14,
rockoon13,
cardoon10,
6 letter words:
donjon14,
jordan14,
nanook10,
candor9,
cardon9,
condor9,
cordon9,
dacron9,
corona8,
racoon8,
nandoo7,
nardoo7,
randon7,
5 letter words:
jocko18,
rojak16,
knack15,
knock15,
cajon14,
kokra13,
drack12,
crank11,
croak11,
cronk11,
crook11,
donko10,
drank10,
drook10,
kondo10,
karoo9,
krona9,
kroon9,
codon8,
condo8,
draco8,
acorn7,
ancon7,
canon7,
corno7,
croon7,
narco7,
racon7,
adorn6,
andro6,
donna6,
donor6,
doona6,
doorn6,
radon6,
rondo6,
4 letter words:
jack17,
jock17,
jark15,
jook15,
joco13,
dojo12,
kark12,
konk12,
kook12,
dack11,
dock11,
jann11,
cark10,
conk10,
cook10,
cork10,
nock10,
rack10,
rock10,
dank9,
dark9,
dook9,
dork9,
kond9,
kaon8,
karn8,
karo8,
knar8,
koan8,
kora8,
koro8,
nark8,
nook8,
nork8,
okra8,
rank8,
rook8,
card7,
coda7,
cond7,
cord7,
doco7,
drac7,
arco6,
cann6,
carn6,
conn6,
coon6,
corn6,
cran6,
narc6,
orca6,
darn5,
dona5,
doon5,
door5,
nard5,
odor5,
orad5,
ordo5,
rand5,
road5,
rood5,
anno4,
anon4,
nona4,
noon4,
roan4,
roon4,
3 letter words:
jak14,
kak11,
jar10,
jor10,
raj10,
dak8,
ark7,
koa7,
kon7,
kor7,
oak7,
oka7,
rok7,
cad6,
cod6,
doc6,
arc5,
can5,
car5,
con5,
coo5,
cor5,
oca5,
orc5,
roc5,
ado4,
and4,
ard4,
dan4,
don4,
doo4,
dor4,
nod4,
oda4,
ord4,
rad4,
rod4,
ann3,
nan3,
non3,
noo3,
nor3,
oar3,
ono3,
oon3,
oor3,
ora3,
ran3,
roo3,
2 letter words:
ja9,
jo9,
ka6,
ko6,
ad3,
da3,
do3,
od3,
an2,
ar2,
na2,
no2,
on2,
oo2,
or2,