Matrix Graphing (like battleship)

Then use the two OR functions for CF:

	A	B	C	D	E	F	G
1	Item 1	Item 2			1	2	3
2	A1	B1		A
3	A2	a2		a
4	A3	a3		B
5	B2			b

=OR(EXACT($A8 & B$7, $A$2:$A$5))

=OR(EXACT($A8 & B$7, $B$2:$B$5))