3-1 - space positive. 1 per year for you and your immediate family. 1st class for Captains, I think Economy or Business for FO's.
4-1 - space available, Economy. 1 per year for you and your family.
1-1 - no idea, probably for company business.
ACM - space positive Economy, 1 per month only for you.
ID 50 - space positive, unlimited. 50% of full fare in the cabin you choose.
ID 75 - space available, unlimited. 25% of full fare in the cabin you choose.
ZED Fare - space avail, unlimited on other Airlines.
After 10 years you get a term pass. That allows unlimited 1st class, space positive travel for a 3% fee.