jlqn klqn2 llqn27 mlqn nlqn2
8brn2 9brn27 acrn bcrn2 ccrn27
x2rn27 y2rn z2rn2 02rn27 12rn
mtsn ntsn2 otsn27 ptsn qtsn2
bktn2 cktn27 dktn ektn2 fktn27