John Riley Here:
Lloyd, those phrases are an out-growth of playing page 5 of the Stick Control book between my feet in quarter-note triplets and filling in the other 1/8 note triplets on the snare drum. Then moving the left hand snare - high tom - snare - floor tom, or moving the left hand either clockwise or counter clockwise around the kit. Once you do this, variations will dawn on you.
Another way to generate similar ideas is to take the 3 voice comping in Beyond Bop and loop any 3, 5 or 7 beats of any line and play it for 4 or 8 bars. Once that's comfortable, experiment moving you left hand around the toms.
These ideas are challenging but the effort will improve coordination, open up your phrasing and strenghten the center of your time.
Good luck,
John