Center letter: m
Outer letter: a c g i n p
Answers (50):
  campaign
  campaigning
  camping
  aiming
  amping
  anima
  caiman
  cami
  camp
  gamin
  gaming
  gamma
  gimp
  imaging
  imagining
  imam
  impinging
  macing
  magi
  magic
  magician
  magma
  maim
  maiming
  main
  mama
  mamma
  managing
  manga
  mania
  maniac
  manic
  manna
  manning
  mapping
  mica
  mimic
  miming
  mincing
  mini
  minicam
  minicamp
  minim
  minima
  mining
  naming
  pampa
  panama
  pimp
  pimping