Center letter: a
Outer letter: i l n o p v
Answers (49):
  pavilion
  aioli
  anal
  anion
  annal
  anon
  anvil
  apian
  appall
  avail
  avian
  lain
  lanai
  lanolin
  lava
  llano
  loan
  naan
  nail
  nana
  naval
  nova
  opal
  oval
  pail
  pain
  palapa
  pall
  palp
  panini
  papa
  papal
  papilla
  papillon
  pavlova
  piano
  pianola
  plain
  plan
  poppa
  vain
  vanilla
  vanillin
  vanpool
  vial
  villa
  villain
  viola
  voila