... , begin by looking at the variables/groups /slots that have the ... true inference, begin with the variables/groups/slots that are the ... ACs that have very restricted variables.
... to a group of other variables and how it can change ... independent of those variables and yet still relate to ... those variables in a similar way." Basically ...
1) Figure out what the two variables in the statement are.
2) Choose one to be the sufficient, and the other to be the necessary.
3) Negate the one you chose to be the sufficient