These represent a sampling of a few different stroke patterns employed by masters of the tantric arts. They are not for everyone, but for some they provide valuable structure and focus.

THE TANTRIC TEN
This is a basic technique that is widely practiced by highly skilled Tantric masters across many different cultures. It is quite simple really, 9 shallow strokes, followed by one deep stroke. Repeat ad infinitum.

WU HISEN'S 81
This practice is recommended by the legendary master Wu Hisen. It calls for a lot of counting, but if you can complete it, you are in the company of Legends.
3 shallow strokes followed by one deep stroke for 81 cycles.
5 shallow strokes followed by one deep stroke for 81 cycles.
9 shallow strokes followed by one deep stroke for 81 cycles.

THE TIDE
For this routine imagine your favorite shoreline beach. Watch as the waves begin to mount far out at sea, slowly building, hitting a peak, and then slowly withdrawing back out into the calmer waters. This is the rhythm you will be going for in this routine. Begin slow, long, soft strokes. The water is just beginning to gather its momentum. Continue but start to increase in depth and tempo, as a wave begins to form. Build more and more, a little faster, a little deeper. The water is beginning to crest. The wave is high, strong, so are your strokes. Deep, long, but not fast. The water has reached its peak, its beginning to topple. RUMBLE, RUMBLE, RUMBLE, it rolls to the shore!!! Then slowly it draws back out as the waves again begin to mount.
Just like the sea itself, sometimes the waves come in sets, and sometimes the waves are slow, and don't mount very much at all. This routine provides a little more variety than the above mentioned, and is a favorite at Legend's.