j21r k21r1 l21r1i m21r n21r1

8s2r1 9s2r1i at2r bt2r1 ct2r1i

xj3r1i yj3r zj3r1 0j3r1i 1j3r

ma4r na4r1 oa4r1i pa4r qa4r1

b14r1 c14r1i d14r e14r1 f14r1i