1f(til(R2R1R2R1,23)p(1)y(i,50),18)(dtil(R2R1R2R1,23)p(-1)y(i,50),50)zA5r1A(d(R2R1R2R1,23),40)AsiiizZASkkkksii5rR4R1fxyyzZmv(K,10)(J,3)