pcr2 qcr21 rcr21x scr2 tcr21
e3r21 f3r21x g3r2 h3r21 i3r21x
3ts21x 4ts2 5ts21 6ts21x 7ts2
skt2 tkt21 ukt21x vkt2 wkt21
hbu21 ibu21x jbu2 kbu21 lbu21x