b2q77 a2q7 91q777 81q77 71q7
mbq7 lbq777 kbq77 jbq7 ibq777
xkp777 wkp77 vkp7 ukp777 tkp77
8to77 7to7 6to777 5to77 4to7
j3n7 i3n777 h3n77 g3n7 f3n777