Center letter: l
Outer letter: f g i n o w
Answers (59):
  flowing
  following
  wolfing
  filing
  fill
  filling
  fling
  flinging
  flog
  flogging
  flow
  flown
  foil
  foiling
  folio
  follow
  fool
  fooling
  fowl
  giggling
  gigolo
  gill
  gilling
  glow
  glowing
  goggling
  golf
  golfing
  googling
  googol
  igloo
  infill
  infilling
  inflow
  lingo
  lining
  lion
  logging
  login
  logo
  loin
  loll
  lolling
  long
  longing
  loon
  lowing
  niggling
  nonillion
  ogling
  oiling
  olio
  oolong
  wiggling
  will
  willing
  willow
  wolf
  wool