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(A (B (N (E), E (N)), E (N (B), B (N)), N (E (B), B (E))), E (A (B (N), N…
A
B
N
E
E
N
E
N
B
B
N
N
E
B
B
E
E
A
B
N
N
B
B
N
A
A
N
N
A
B
B
A