Looking at Z408 in another "perspective", observed using the "morse method", each line that starts each of the three parts that the infamous Z sent the codes, can in theory contain another message.
The method is the same that I have ever used.
1- First eliminate the symbols leaving only the letters.
2- I make use these letters in order in the original reverse order.
3 - turn then, these letters in Morse.
4 - Rearranging the letters to search for words in context.
Below, a theoretical result.
Ordem normal
PZuBORXB
ZKIWLM
NSEZAPBV
Inversa
BXROBUZP
MLWIKZ
VBPAZESN
morse
-... -..- .-. --- -... ..- --.. .--. / -- .-.. .-- .. -.- --.. / ...- -... .--. .- --.. . ... -.
"decode"
-. . . -.. -.-. --- -.. . .. - --. ..- -. / -- . - ... --. . - .- --.. / .. .- -... . --. .- -- .
... .. -.
morsedecoder
"message"
NEED CODE IT !!GUN METS GET A Z!!! I A BE GAMES IN!!!