Air New Zealand Air Points - NZ fare class hierarchy

Does anyone happen to know the NZ fare class hierarchy?

On a related note, does NZ use the same formula as most other *A carriers where the first letter of the fare code is the booking class? (I assume yes, but just wanted to make sure as I´ve seen some really low Yabcde fares which presumably would book into booking class Y and thus be upgradable using miles)

Thanks!

For paid fares

Business
CDZJ

Premium economy
UEOA

Economy
YBMHQVWTLSGXKP
economy hierarchy also affected by fare type (seat < seat + bag < works < works deluxe) for all except longhaul

For paid fares

Business
CDZJ

Premium economy
UEOA

Economy
YBMHQVWTLSGXKP
economy hierarchy also affected by fare type (seat < seat + bag < works < works deluxe) for all except longhaul
+1

I also noted that GAS are booked into F

And fares above W are the long term fares, and below W are the special fares...

And fares above W are the long term fares, and below W are the special fares...

What about W itself?

What about W itself?
I should say W and above....

For paid fares

Business
CDZJ

Premium economy
UEOA

Economy
YBMHQVWTLSGXKP
economy hierarchy also affected by fare type (seat < seat + bag < works < works deluxe) for all except longhaul

Thanks a lot!^

I´m mostly interested in longhaul fares. Are all U/E/O/A fares Premium Economy fares? I´m just asking because Expertflyer shows "Economy" for those fares which I found somewhat irritating.