( A x ) m ′ n ′ , m n = δ δ n ′ n ( J x ( m ) ) m ′ m ( B x ) m ′ n ′ , m n = δ δ m ′ m ( J x ( n ) ) n ′ n ( A y ) m ′ n ′ , m n = δ δ n ′ n ( J y ( m ) ) m ′ m ( B y ) m ′ n ′ , m n = δ δ m ′ m ( J y ( n ) ) n ′ n ( A z ) m ′ n ′ , m n = δ δ n ′ n ( J z ( m ) ) m ′ m ( B z ) m ′ n ′ , m n = δ δ m ′ m ( J z ( n ) ) n ′ n