Mapping array to the problem

A B C

1 1 3

1 2 2

1 3 1

2 1 2

2 2 1

2 3 3

3 1 1

3 2 3

3 3 2

x y z
true 1 blue
true 2 white
true 3 red
false 1 white
false 2 red
false 3 blue
null 1 red
null 2 blue
null 3 white

X can be {true, false, null}

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