What I think of as Bo Didly beat (and I use it on the Bodhran for some reels) is dum dee dum dee dum pause d dum dum. I usually only use the first dum dee dum dee dum. If you count 8 beats too the bar the under lying pattern is 123-123-12. I think this rhythm was used a lot by Nusrat Fatah Ali Khan in his qawali music. 12/8 it ain't. All the best PP.