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[` nc` a ]ː` 铌a a QReb
[` 6 | 0
nc` 2 | 2 1 | 1
a 2 | 2 1 | 1
]ː` 0 | 6 1 | 2 9 | 0
铌a 1 | 1 2 | 1 2 | 0
a 1 | 1 0 | 9 0 | 2
QReb