about runes

HI all

I was wondering can you have more than one rune on your armor,like if you have 4 blood runes +1 can u put them all on other peices of armor and get +4 blood add or can you only have one of the same kind. Ihope I am making sence if not try not to flame me to bad.

One of the same kind, so if you have 2 +1s your total is +1
If you have a +1 and a +2 your total is +2 (it reads the highest rune you have)