Center letter: u
Outer letter: a c h l n t
Answers (36):
  unlatch
  actual
  annual
  annul
  aunt
  cannula
  caul
  clutch
  cull
  cult
  haul
  haunch
  haunt
  hula
  hull
  hunch
  hunt
  hutch
  lacuna
  launch
  luau
  lull
  lulu
  luna
  lunch
  lunula
  null
  nuthatch
  tactual
  taunt
  taut
  tuna
  tutu
  ulna
  unclutch
  uncut