When performed properly, the six-step pattern can be completed in less than two seconds. For drill purposes, particularly with a partner, the pattern should be completed in less than four seconds, or even slower until the movement becomes natural. Of course, the head, or hands and arms, would be appropriate targets in a combat mode. However, for training, the sticks should meet approximately one inch from the tips.
The two most common varieties on heaven six are “standard six” and “earth six.” In standard six, the second and fifth strikes have the sticks pointed downward. As the name implies in earth six, all strikes are performed with the sticks pointed downward. In all other respects, the weaving pattern is identical. Using only the high and low patterns coupled with the six striking movements, 64 possible patterns emerge.
Other variations are easily adapted to the six-count drill. For instance, a thrusting or “umbrella” strike could be substituted for the first and fourth strikes, while maintaining a six-count pattern. Also, the pattern itself may be contracted to four counts or expanded to eight, ten or 12 counts.
Using sticks or swords, the destructive power of sinawali is readily apparent. Normally heralded as a humane art, kali emphasizes strikes to the extremities based on the theory that if you remove the fangs of your opponent, he cannot hurt you.

Previous comment: "YES! The art form used in the Bourne Ide [...]"