6 letter words:
prolog9,
5 letter words:
gloop8,
group8,
orlop7,
proul7,
4 letter words:
glop7,
golp7,
goop7,
gorp7,
gulp7,
plug7,
pogo7,
prog7,
upgo7,
loop6,
loup6,
polo6,
pool6,
poor6,
pour6,
proo6,
purl6,
roop6,
roup6,
gool5,
goor5,
gurl5,
logo5,
loor4,
lour4,
roul4,
3 letter words:
gup6,
pug6,
lop5,
oop5,
oup5,
plu5,
pol5,
poo5,
pro5,
pul5,
pur5,
upo5,
urp5,
goo4,
gor4,
gul4,
gur4,
log4,
lug4,
rug4,
loo3,
lor3,
lou3,
lur3,
oor3,
our3,
roo3,
2 letter words:
op4,
po4,
up4,
go3,
gu3,
ug3,
lo2,
oo2,
or2,
ou2,
ur2,