Grouping Rules for 3 Inputs

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• Look for rectangular groups made up of 1's

•	Group sizes:		Form of Contribution
	8 (=4x2)		1
	4 (=2x2 or 4x1)		A   or   B'
	2 (=2x1 or 1x2)		B'C
	1 (=1x1)		A'BC'

• Look for larger groups before smaller groups
• Groups can overlap with other groups
• Groups can wrap around the two vertical edges