5 letter words:
chuff16,
punch12,
4 letter words:
huff13,
chef12,
cuff12,
puff12,
pech11,
puce8,
enuf7,
3 letter words:
eff9,
feh9,
hep8,
hup8,
peh8,
cep7,
cup7,
pec7,
fen6,
feu6,
fun6,
hen6,
hue6,
hun6,
cue5,
ecu5,
pen5,
pun5,
2 letter words:
ef5,
eh5,
fe5,
he5,
uh5,
pe4,
up4,
en2,
ne2,
nu2,
un2,