#secondary  the defensive football players who line up behind the linemen
  supertype:  #formation_acting_as_a_unit__formation  an arrangement of people or things acting as a unit; "a defensive formation"; "a formation of planes"
  member of:  #football_team
  member:  #football_back_position__back  the position of a player on a football team who is stationed behind the line of scrimmage

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