Center letter: k
Outer letter: a c d e h i
Answers (26):
  chickadee
  cake
  caked
  check
  checked
  cheek
  chick
  deck
  decked
  deke
  deked
  dike
  eked
  hack
  hacked
  haka
  hake
  heck
  hick
  hike
  hiked
  khaki
  kick
  kicked
  kidded
  kiddie