Center letter: i
Outer letter: b e f l n u
Answers (34):
  bluefin
  unbelief
  beeline
  belie
  belief
  bible
  biff
  bile
  bill
  blin
  blini
  elfin
  ennui
  feline
  fief
  fife
  file
  fill
  fine
  fulfill
  infill
  innie
  libel
  libelee
  lien
  lieu
  life
  lifeline
  line
  linen
  nibble
  nine
  nubbin
  nubile