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中心 (A (A2, A3, A1), C (C1, C2, C3), B (B1 (B2 (B22, B22, B22), B11, B11,…
中心
A
A2
A3
A1
C
C1
C2
C3
B
B1
B2
B22
B22
B22
B11
B11
B11
B3
B33
B33
B33