Center letter: o
Outer letter: f g h l t u
Answers (37):
  thoughtful
  flog
  flout
  fool
  foot
  fought
  foul
  ghoul
  golf
  goof
  googol
  goth
  gout
  holt
  hoof
  hoot
  hotfoot
  loft
  logo
  loll
  loot
  lotto
  lout
  ought
  outfought
  outgo
  outthought
  thou
  though
  thought
  tofu
  toll
  tool
  toot
  tooth
  tough
  tout