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• 13:43:55: Q1. what red + green?

• 13:44:05: yellow

• 13:44:49: Q2 how about blue + green?

• 13:46:07: Q3 how about blue + red?

• 13:46:35: Q3 how about blue + red?

• 13:50:27: Q4. Can you guess the order of the light?

• 14:05:42: Q5 should we give up chrominance or luminance if we can only keep one?