02nx1a 12nx 22nx1 32nx1a 42nx

ptox qtox1 rtox1a stox ttox1

ekpx1 fkpx1a gkpx hkpx1 ikpx1a

3aqx1a 4aqx 5aqx1 6aqx1a 7aqx

s1qx t1qx1 u1qx1a v1qx w1qx1