Center letter: c
Outer letter: a b e i k l
Answers (41):
  clickable
  abaci
  aback
  acacia
  acai
  alack
  bacilli
  back
  beck
  biblical
  black
  blackball
  cabal
  cabala
  cabbie
  cable
  cackle
  cake
  call
  calla
  callable
  callback
  celeb
  celiac
  cell
  celli
  cilia
  clack
  click
  icicle
  iliac
  kick
  kickback
  kickball
  lace
  lack
  laic
  laical
  lice
  lick
  lilac