I am loving your questions.

Glad to learn.

Here is a way I tried. But it has two disadvantages.

One - I can only do three sets. But my actual input has 7 and even more.

Two - I cannot write the first column saying unique or common.

Code:

for i in 100 010 001 110 101 011 111; do awk -F"," 'NR>1 {print $2$3$4}' 1 | grep $i | wc -l;done

Thanks