\N
\N
\N
\N
0
1
2
3
\N
\N
\N
\N
0
\N
2
\N
\N
\N
\N
\N
str_0
\N
str_2
\N
\N
\N
\N
\N
[]
[]
[]
[]
[]
[]
[]
[]
[0]
[]
[0,1,2]
[]
[[0]]
[[NULL]]
[[2]]
[[NULL]]