17a7 27a7p 37a7p1 47a7 57a7p
qyb7p ryb7p1 syb7 tyb7p uyb7p1
fpc7p1 gpc7 hpc7p ipc7p1 jpc7
4fd7 5fd7p 6fd7p1 7fd7 8fd7p
t6d7p u6d7p1 v6d7 w6d7p x6d7p1