Center letter: b
Outer letter: c d e n u a
Answers (41):
  abundance
  abed
  baaed
  baba
  babe
  bade
  banana
  banc
  band
  bandana
  bandanna
  bandeau
  banded
  bane
  banned
  baud
  bead
  beaded
  bean
  beaned
  beau
  bedaub
  bedaubed
  bedded
  been
  bend
  bubba
  budded
  cabana
  cabbed
  cube
  cubed
  dabbed
  daub
  daubed
  dubbed
  ebbed
  nabbed
  unban
  unbanned
  unbend