Center letter: k
Outer letter: a g i l n r
Answers (24):
  rankling
  akin
  alkali
  inking
  inkling
  irking
  kill
  killing
  kiln
  kilning
  king
  kinging
  kink
  kinking
  krill
  lank
  lark
  liking
  link
  linking
  raking
  rank
  ranking
  rink