Center letter: a
Outer letter: b c j k o t
Answers (28):
  bootjack
  jackboot
  aback
  abbot
  attack
  baba
  babka
  back
  baobab
  boat
  boba
  bobcat
  cacao
  coat
  coca
  cockatoo
  cocoa
  jabot
  jack
  jojoba
  kabob
  taboo
  tack
  taco
  tact
  tattoo
  tobacco
  toccata