DS cannot always supply figures, even when the part numbers are known. For those four sets, even Heather who runs PlaymoDB has been unable to find the official part numbers (she has some pretty crafty ways of 'scraping' data out of Geobra websites, as well as adding information sent in by collectors who discover part numbers)- the 'knnnn' numbers in playmoDB are place-holders until the official part numbers are known. Geobra undoubtedly gives all parts (including these figures) 8-digit part numbers, but for some reason the company is cagey about sharing this information with collectors (I have asked directly in the past). So I guess they probably wouldn't have stocks of those figures, even if the part numbers were known.