"Bubbles":  NOT composed with others

called NOR     (NOT-OR)

	OR				NOR
_____	_____	___	_____		________	____	____
0	0	|	0		0  0	|	1
0	1	|	1		0  1	|	0
1	0	|	1		1  0	|	0
1	1	|	1		1  1	|	0

Another of the functions for n=2.