q1f1d p1f1 o1f1dk n1f1d m1f1
1af1 0af1dk zaf1d yaf1 xaf1dk
cke1dk bke1d ake1 9je1dk 8je1d
ntd1d mtd1 ltd1dk ktd1d jtd1
y2c1 x2c1dk w2c1d v2c1 u2c1dk