Center letter: c
Outer letter: a e h i l m
Answers (55):
  chemical
  acacia
  acai
  acclaim
  ache
  acme
  cache
  call
  calla
  calm
  came
  camel
  camellia
  cami
  celiac
  cell
  celli
  chai
  chalice
  challah
  chia
  chic
  chica
  chichi
  chicle
  chili
  chill
  chime
  cilia
  claim
  clam
  cliche
  clime
  each
  emcee
  hamachi
  heliacal
  helical
  icicle
  iliac
  lace
  laic
  laical
  leach
  lech
  leech
  lice
  lilac
  mace
  malic
  malice
  mecca
  mica
  mice
  mimic