There are 32 modules sufficient to produce all the H-bricks of the conservative subset, and many other bricks. Here are their OpenSCAD module declarations and schematic representations:

module render_T ( x, y, show_cap = true, // yellow show_inner = true // red );

area == 6 used often

module render_S ( x, y, select // select == 0: hexagon (H-brick) // select == 1: Y pointing up (Y-brick) // select == 2: Y pointing down (Y-brick) );

select == 0

used often

module render_AC ( // AE, CE, CG, etc. x, y, show_cap = true, // yellow show_inner = true, // red show_outer = true // blue );
module						angle type	area	comment
						acute convex	1	used rarely
						obtuse convex	2	used often
						straight	3
						obtuse concave	4
						acute concave	5	used rarely