Center letter: i
Outer letter: b e k l m o
Answers (32):
  bookmobile
  belie
  bible
  bike
  bile
  bilk
  bill
  biome
  boil
  bookie
  imbibe
  immobile
  kibble
  kill
  kilo
  libel
  libelee
  like
  limb
  limbo
  lime
  limo
  mike
  mile
  milk
  mill
  mime
  mimeo
  mobile
  moil
  olio
  ollie