a0*b0*c0*d0+a1*b1*c1*d1,
a0*b1*c0*d0+a1*b0*c1*d1,
a0*b0*c0*d1+a1*b1*c1*d0,
a0*b1*c0*d1+a1*b0*c1*d0,
a0*b0*c1*d0+a1*b1*c0*d1,
a0*b1*c1*d0+a1*b0*c0*d1,
a0*b0*c1*d1+a1*b1*c0*d0,
a0*b1*c1*d1+a1*b0*c0*d0