Everyone outs their reports d1, then do the same d2. NL until you got enough reports to determine who is what cop. You should agree on one guy to investigate n2, out the reports d2.
How to see what cop you are:
No report d1: lazy.
Inno d1: not lazy or paranoid.
Maf d1: not lazy or naive.
2 maf reports in a row: paranoid, confused or insane.
Inno and maf/maf and inno: real, confused or insane.
inno and maf on same: confused.

Mafia should always out fake reports according to one of the cops. Example: If you want to fake paranoid, you should always say maf on everyone.