Got it to 86 runes
Optimized is as follows (in rot13):
bar - EN
gjb - EEN
guerr - AN
sbhe - EPAN
svir - PPENN
fvk - EEPAN
frira - EPANAN
rvtug - NEPNPAEPN
avar - EEPNPAENPA
gra - NNEPNPA
ryrira - APNPNN
gjryir - APNNAPA
guvegrra - EPEANPN
sbhegrra - PNPAANAANPANA