ist
gul
vex
ohm
lo
sur
ber
jah
cham
zod
it takes 2 rune of lower level to make the following one.
i saw various way of thinking by time about first rune to be considered hr
sometimes saw gul as half hr, most time vex is the start of hr, sometime ohm.
you have also to consider that for example cham has little worth even if it is above most other hr and so on.