Link the Nodes
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NODE Z
Prev
None
Z
X
B
C
Next
None
Z
X
B
C
NODE X
Prev
None
Z
X
B
C
Next
None
Z
X
B
C
NODE B
Prev
None
Z
X
B
C
Next
None
Z
X
B
C
NODE C
Prev
None
Z
X
B
C
Next
None
Z
X
B
C
