Center letter: t
Outer letter: c h i k o p
Answers (31):
  toothpick
  chit
  cockpit
  cooktop
  coopt
  coot
  hitch
  hoot
  hotpot
  itch
  kith
  octopi
  optic
  photic
  photo
  photopic
  picot
  pipit
  pitch
  pith
  pothook
  thick
  tick
  ticktock
  tiki
  tiptop
  tock
  took
  toot
  tooth
  topic