11 letter words:
unhelpfully22,
9 letter words:
helpfully20,
unhelpful17,
7 letter words:
helpful15,
6 letter words:
phenyl14,
lyfull12,
penful11,
pulley11,
lunule6,
5 letter words:
flype13,
phyle13,
felly11,
fluey11,
fully11,
hully11,
nelly8,
4 letter words:
hype12,
fley10,
fyle10,
hyen10,
hyle10,
help9,
pelf9,
puly9,
puny9,
pyne9,
yelp9,
enuf7,
fell7,
flue7,
fuel7,
full7,
hell7,
hule7,
hull7,
luny7,
lyne7,
yell7,
yule7,
pell6,
plue6,
pule6,
pull6,
pulu6,
lull4,
lulu4,
lune4,
null4,
3 letter words:
hyp11,
feh9,
fey9,
fly9,
hey9,
hye9,
yeh9,
hep8,
hup8,
peh8,
ply8,
puh8,
puy8,
pye8,
yep8,
yup8,
elf6,
fen6,
feu6,
flu6,
fun6,
hen6,
hue6,
hun6,
ley6,
lye6,
nef6,
nye6,
uey6,
yen6,
lep5,
nep5,
pen5,
plu5,
pul5,
pun5,
ell3,
leu3,
ule3,
ulu3,
2 letter words:
fy8,
ef5,
eh5,
fe5,
he5,
ny5,
uh5,
ye5,
yu5,
pe4,
up4,
el2,
en2,
ne2,
nu2,
un2,
