Center letter: f
Outer letter: a d e k l n
Answers (35):
  flanked
  alfalfa
  deaf
  deafen
  deafened
  defend
  defended
  fade
  faded
  fake
  faked
  falafel
  fall
  fallen
  fanned
  feed
  feel
  fell
  fella
  felled
  fend
  fended
  fennel
  flak
  flake
  flaked
  flan
  flank
  flannel
  flea
  fled
  flee
  landfall
  leaf
  leafed