Set: Abe Bob Cam Dan Elf Fay
  [Abe,Bob,Cam,Dan,Elf,Fay]

Set: dog dog cat cat cat dog
  [cat,dog]

Set: Fay Elf Dan Cam Bob Abe Bob Cam Dan Elf Fay
  [Abe,Bob,Cam,Dan,Elf,Fay]

Set: Abe
  [Abe]