entering 1st and 2nd level 1
entering 1st and 2nd level 1 1
entering 1st and 2nd level 1 1
entering 1st and 2nd level 2 3
entering 1st and 2nd level 2 3 1
entering 1st and 2nd level 2 3 1
entering 1st and 2nd level 4
entering 1st and 2nd level 4
entering 1st and 2nd level 4 1
entering 1st and 2nd level 4 1