Everyone has heard the name paradiddle at some points in their life. Paradiddle is basically a combination of single stroke and double stroke (check out Rudiments 101)
So a single - double - single - double
R L R R L R L L
or: L R L L R L R R
Now there are three other variations to this rudiments meaning that if we push the notes by a 16th note we can rearrange this rudiment.
check it out: Single Paradiddle inversions