I understand your joke!

I had no clear that variations in CZ as you say are called P-24 and P-27.
I only know the denomination VZ-22 and VZ-24 or rather vzor vzor -22 and-24.

Some time later came the VZ-27 or rather vzor-27.

Or in English: Model-22, model-24 and model-27.

vzor "Czech" translation "model" English.

CZ is not named that the begin also it was not and that is confused with the famous CZ-22 rifle and beyond.

regards