ac2r bc2rn cc2rnp dc2r ec2rn

z22rn 022rnp 122r 222rn 322rnp

ot3rnp pt3r qt3rn rt3rnp st3r

dk4r ek4rn fk4rnp gk4r hk4rn

2a5rn 3a5rnp 4a5r 5a5rn 6a5rnp