7 letter words:
ratatat7,
5 letter words:
apart7,
trapt7,
attar5,
tatar5,
4 letter words:
atap6,
para6,
part6,
prat6,
rapt6,
tapa6,
tarp6,
trap6,
tart4,
3 letter words:
apt5,
par5,
pat5,
rap5,
tap5,
art3,
att3,
rat3,
tar3,
tat3,
2 letter words:
pa4,
aa2,
ar2,
at2,
ta2,