1. Level 1, item 1 of set size unknown
  1. ++Level 2, item 1 of set size unknown
  1. ++Level 2, item 2 of set size unknown
  1. ++Level 2, item 3 of set size unknown
  1. ++++Level 3, item 1 of set size unknown
  1. ++++Level 3, item 2 of set size unknown
  1. Level 1, item 2 of set size unknown
  1. Level 1, item 3 of set size unknown
  1. Level Unspecified, aria-setsize attribute does not exist, item 4 of set size 4
  1. Level Unspecified, aria-setsize attribute does not exist, item 5 of set size 5