93k1dx a4k1 b4k1d c4k1dx d4k1
yul1 zul1d 0ul1dx 1ul1 2ul1d
nlm1d olm1dx plm1 qlm1d rlm1dx
ccn1dx dcn1 ecn1d fcn1dx gcn1
12n1 22n1d 32n1dx 42n1 52n1d