Center letter: a
Outer letter: e h n o p t
Answers (64):
  pantheon
  phaeton
  phonate
  aeon
  annatto
  annotate
  anon
  ante
  antenna
  antennae
  apnea
  atone
  atop
  eaten
  ethane
  happen
  hate
  hath
  hatha
  heap
  heat
  heath
  heathen
  henna
  heptane
  naan
  nana
  nape
  natant
  neap
  neat
  neaten
  neath
  neonate
  notate
  oaten
  oath
  paean
  pane
  panettone
  pant
  papa
  pate
  patent
  patentee
  path
  peahen
  peat
  pennant
  pentane
  phat
  poppa
  potato
  potentate
  tapa
  tape
  tattoo
  teapot
  teat
  tenant
  than
  thane
  that
  theta