Center letter: k
Outer letter: a c d e n p
Answers (35):
  kneecapped
  pancaked
  cake
  caked
  dank
  deck
  decked
  deke
  deked
  eked
  kappa
  keen
  keened
  keep
  knack
  knead
  kneaded
  knee
  kneecap
  kneed
  kneepad
  naked
  nankeen
  neck
  necked
  pack
  packed
  pancake
  peak
  peaked
  peck
  pecked
  peek
  peeked
  peke