Center letter: p
Outer letter: a c i l r t
Answers (50):
  practical
  alpaca
  apart
  appall
  apparat
  capital
  capri
  carp
  carpal
  carpi
  catalpa
  clap
  claptrap
  clip
  crap
  pact
  pail
  pair
  palapa
  palatal
  palatial
  pall
  palp
  papa
  papal
  papilla
  part
  partial
  partita
  pica
  piccata
  pill
  pillar
  pipit
  piratic
  pita
  pitapat
  plait
  plat
  prat
  priapic
  rapt
  rattrap
  tapa
  tapir
  tarp
  tilapia
  tipi
  trap
  trip