12 letter words:
noncongruent15,
9 letter words:
congruent12,
nonurgent10,
8 letter words:
nocturne10,
7 letter words:
connote9,
contour9,
cornute9,
cornuto9,
coronet9,
counter9,
crouton9,
ecotour9,
nocturn9,
noncore9,
recount9,
trounce9,
outgone8,
rontgen8,
neutron7,
6 letter words:
cogent9,
conger9,
congou9,
conner8,
cooter8,
cornet8,
couter8,
croton8,
croute8,
cunner8,
neocon8,
nocent8,
gentoo7,
guenon7,
gunnen7,
gunner7,
gurnet7,
nonego7,
orgone7,
tonger7,
tongue7,
trogon7,
urgent7,
enroot6,
neuron6,
tenour6,
tonner6,
turnon6,
unrent6,
unroot6,
untorn6,
5 letter words:
cogon8,
conge8,
congo8,
cento7,
centu7,
conte7,
conto7,
cooer7,
cornu7,
count7,
court7,
crone7,
croon7,
cruet7,
curet7,
cuter7,
eruct7,
nonce7,
oncet7,
ounce7,
recon7,
recto7,
recut7,
truce7,
ergot6,
erugo6,
genro6,
goner6,
grout6,
grunt6,
outgo6,
rogue6,
rouge6,
togue6,
ungot6,
nonet5,
noter5,
outer5,
outre5,
rouen5,
route5,
tenon5,
tenor5,
toner5,
tonne5,
trone5,
tuner5,
4 letter words:
cent6,
cero6,
cone6,
conn6,
coon6,
coot6,
core6,
corn6,
cote6,
cunt6,
cure6,
curn6,
curt6,
cute6,
ecru6,
once6,
torc6,
unco6,
ergo5,
gent5,
genu5,
goer5,
gone5,
goon5,
gore5,
gout5,
grot5,
grue5,
ogre5,
rung5,
tong5,
trog5,
trug5,
tung5,
urge5,
euro4,
neon4,
none4,
noon4,
note4,
noun4,
onto4,
rent4,
root4,
rote4,
roto4,
roue4,
rout4,
rune4,
runt4,
tern4,
tone4,
toon4,
tore4,
torn4,
toro4,
tour4,
true4,
tune4,
turn4,
unto4,
3 letter words:
cog6,
con5,
coo5,
cor5,
cot5,
cru5,
cue5,
cur5,
cut5,
ecu5,
orc5,
rec5,
roc5,
ego4,
eng4,
erg4,
gen4,
get4,
gnu4,
goo4,
gor4,
got4,
gun4,
gut4,
neg4,
nog4,
reg4,
rug4,
teg4,
tog4,
tug4,
eon3,
ern3,
net3,
noo3,
nor3,
not3,
nun3,
nut3,
one3,
ono3,
oot3,
ore3,
ort3,
our3,
out3,
ret3,
roe3,
rot3,
rue3,
run3,
rut3,
ten3,
toe3,
ton3,
too3,
tor3,
tun3,
urn3,
ute3,
2 letter words:
go3,
en2,
er2,
et2,
ne2,
no2,
nu2,
oe2,
on2,
or2,
re2,
to2,
un2,
ut2,