Answer:
For each n get its posting then AND them
Step-by-step explanation:
1. Lets presume we have multiple n terms
2. We get the posting from each n term
3. We use the function AND and apply it to each n term
4. We start with the tiniest set and we continue from there
5. We have a pair of n terms
6. We get the posting from 1st n
7. We get the posting from 2nd n
8. We apply n1 AND n2
