Center letter: p
Outer letter: a g i k n r
Answers (44):
  parking
  pranking
  apian
  aping
  gaping
  grappa
  grip
  griping
  gripping
  kappa
  kingpin
  kippa
  napkin
  napping
  nipping
  pagan
  paging
  pain
  paining
  pair
  pairing
  pang
  panini
  panning
  papa
  paprika
  paring
  park
  parka
  pigging
  ping
  pinging
  pining
  pink
  pinking
  pinning
  piping
  pippin
  prank
  prig
  rapini
  rapping
  riparian
  ripping