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peek_nodes
0: 
allocate
1
ref_node
G*8Mr4tj`[Kr
parent: 0
children: 
allocate
2
allocate
3
remove
allocate
3
ref_node
K5@f.ld<P\
parent: 1
children: 
allocate
2
set_parent
set_parent
allocate
4
remove
set_parent
allocate
4
ref_node
yOd)n5a3EMY+aA
parent: 0
children: 4 
ref_node
V{os.:M
parent: 2
children: 
allocate
5
remove
allocate
4
remove
allocate
5
remove
remove
remove
ref_node
K5@f.ld<P\
parent: 0
children: 
remove
remove
allocate
1
allocate
5
ref_node
[n^xv%g}(
parent: 0
children: 5 
allocate
4
allocate
3
remove
remove
peek_nodes
0: 
1: [recycled]
2: [recycled]
3: [recycled]
4: [recycled]
5: [recycled]
allocate
2
remove
allocate
4
allocate
3
remove
allocate
5
set_parent
allocate
1
allocate
2
set_parent
allocate
3
ref_node
n~{#i]3ve2Zcyzy
parent: 0
children: 
remove
allocate
4
ref_node
n~{#i]3ve2Zcyzy
parent: 0
children: 4 
allocate
3
allocate
2
remove
remove
allocate
1
allocate
2
allocate
3
ref_node
'*TnTH
parent: 0
children: 3 
allocate
6
remove
Node is recycled!
set_parent
allocate
4
remove
allocate
6
peek_nodes
0: 
1: '*TnTH
2: aFNv*b
3: [recycled]
4: [recycled]
5: n~{#i]3ve2Zcyzy
6: ~NX>d=l+'SKLb
set_parent
allocate
4
peek_nodes
0: 
1: '*TnTH
2: aFNv*b
3: [recycled]
4: +-D^
5: n~{#i]3ve2Zcyzy
6: ~NX>d=l+'SKLb
set_parent
remove
ref_node
'*TnTH
parent: 6
children: 6 
remove