• Group Title Alpha
  • First Level A
  • First Level B
    • Second Level a
    • Second Level b
      • Third-level Item I
      • Third-level Item II
      • Third-level Item III
      • Third-level Item IV
    • Second Level c
    • Second Level d
  • Group Title Beta
  • First Level C
  • First Level D
    • Second Level aa
    • Second Level bb
    • Second Level cc