Center letter: c
Outer letter: a b m n o t
Answers (38):
  combatant
  noncombatant
  bacon
  banc
  bobcat
  cabana
  cacao
  camo
  cancan
  canna
  cannon
  cannot
  canon
  cant
  cantata
  canton
  catacomb
  coat
  coca
  cocoa
  cocoon
  coma
  comb
  combat
  combo
  comma
  common
  concoct
  contact
  coot
  cotton
  noncom
  octant
  taco
  tact
  tobacco
  toccata
  tomcat