7 letter words:
hardhat14,
5 letter words:
hatha11,
arhat8,
ratha8,
4 letter words:
haha10,
hath10,
hard8,
haar7,
hart7,
rath7,
taha7,
tahr7,
thar7,
dart5,
data5,
drat5,
trad5,
rata4,
tara4,
3 letter words:
hah9,
dah7,
had7,
aah6,
aha6,
hat6,
rah6,
ard4,
rad4,
tad4,
art3,
rat3,
tar3,
2 letter words:
ah5,
ha5,
ad3,
da3,
aa2,
ar2,
at2,
ta2,