1985 - 1992
1985ZAA-100 - ZZZ-999
AAA-10A - AJZ-99Z
The "Z" series (omitted in 1973) was used from January to June 1985.
After ZZZ-999, several letter groups ("words") omitted from 1973-84 were issued.
Here are a few of the ones we know (or suspect) were in this group:
ALE BAG BAT BOX BRP BUB CAN CON COW END FEM FEY FIB FLU FOD FOE FOG FRT GAB GUI HEC
HEN HIP HMO IDO IHS IJU ILL INK INU IVD JAZ JUG KAT KIC KOW RAG RAW RED RUT RYE
Without actual registration documents, it's impossible to tell with 100% certainty which are "word plates" and which are not.
This data is a best guess.
There may have been other plates issued over the years with unused prefixes.
I have a report of the LOW and VEK suffixes being issued to vehicles in 1987 (from Steve Bier).
The new series started at AAA-10A in August 1985 after the initial "word" plates were issued.
1986AKA-10A - BMZ-99Z
1987BNA-10A - CNZ-99Z
1988COA-10A - EOZ-99Z
The "D" series was reserved
for DEALER plates.
1989EPA-10A - FOZ-99Z
1990FPA-10A - GKZ-99Z
1991GLA-10A - HHZ-99Z
1992HIA-10A - HZZ-99Z
This series stopped in November 1992 at HZZ-99Z.