line 07, level 2, locallevel 0, xxxxx
  line 08, level 3, locallevel 1, xxxxx
  line 09, level 3, locallevel 1, xxxxx
    line 10, level 4, locallevel 2, xxxxx
    line 11, level 4, locallevel 2, xxxxx
  line 12, level 3, locallevel 1, xxxxx