wpairT4_b0_r2_f4_sm0_b9_r0_f0[0,0]*(d-2*a0-a1)
wpairT4_b0_r2_f4_sm0_b9_r0_f0[1,0]*(-2*a0)
wpairT4_b0_r2_f4_sm0_b9_r0_f0[-1,1]*(-a1)
wpairT4_b0_r2_f4_sm0_b9_r0_f0[0,1]*(-2*a1)

wpairT4_b0_r2_f4_sm0_b9_r0_f0[0,0]*(a0-a1)
wpairT4_b0_r2_f4_sm0_b9_r0_f0[1,-1]*(-a0)
wpairT4_b0_r2_f4_sm0_b9_r0_f0[-1,1]*(a1)
wpairT4_b0_r2_f4_sm0_b9_r0_f0[0,1]*(2*a1)

