Well, consider that 2nd example. You could start that anywhere in the measure, right, and if they're groups of triplet sixteenths you'd want to emphasize the first C and then the F# on the A string (right after I said where the pattern ended). It doesn't matter if the accented notes in the riff land on the T.S. pulses, right?
That's going to be thick to read and I've got to go just now or I'd clean it up. I'll do it later.