Table 1. Variations of the videos in the “knocking” set.

Effort	Phrasing	Shape	Space
bound	impactive	advancing	far reach
direct	impulsive	enclosing	mid reach
free	swing	opening	near reach
light		retreating	side-across
quick		rising	side-open
strong		sinking	backwards
sustained			down
			up
7	3	6	8