8 letter words:
deadhead14,
6 letter words:
headed11,
5 letter words:
haded10,
aahed9,
ahead9,
added8,
4 letter words:
ahed8,
hade8,
haed8,
head8,
heed8,
dada6,
dead6,
deed6,
3 letter words:
dah7,
edh7,
had7,
aah6,
aha6,
hae6,
add5,
dad5,
dee4,
2 letter words:
ah5,
eh5,
ha5,
he5,
ad3,
de3,
ed3,
aa2,
ae2,