7 letter words:
dogtrot9,
6 letter words:
grotto7,
5 letter words:
droog7,
torot5,
4 letter words:
good6,
door5,
dort5,
goor5,
grot5,
odor5,
ordo5,
rood5,
trod5,
trog5,
otto4,
root4,
roto4,
toot4,
toro4,
tort4,
trot4,
3 letter words:
dog5,
god5,
doo4,
dor4,
dot4,
goo4,
gor4,
got4,
ord4,
rod4,
tod4,
tog4,
oor3,
oot3,
ort3,
roo3,
rot3,
too3,
tor3,
tot3,
2 letter words:
do3,
go3,
od3,
oo2,
or2,
to2,