Center letter: o
Outer letter: a e g h l n
Answers (47):
  halogen
  aeon
  agelong
  agog
  aloe
  aloha
  alone
  along
  analog
  anon
  eggnog
  galleon
  gallon
  goal
  goggle
  gone
  gong
  gonna
  google
  googol
  goon
  halo
  hellhole
  hello
  hogan
  hole
  hone
  lagoon
  llano
  loan
  loge
  logo
  loll
  lone
  long
  longan
  loon
  neon
  noel
  nonagon
  nonagonal
  none
  noon
  ogee
  ogle
  oleo
  oolong