[]
[1,2]
[1]
[1,2]
[]
[]
[]
[]
[]
[]
[]
[]
[1,2]
[1]
[1,2]
[]
[1,2]
[1,2]
[1,2]
[1,2]
[]
[]
[]
[]
[1,2]
[1,2]
[1]
[]
[]
[]
[]
[]
[]
[]
[]
[]
[1,2]
[1,2]
[1]
[]
[1,2]
[1,2]
[1,2]
[1,2]
[]
[]
[]
[]