Hidden chocographs?

I looked and printed (well it was my brother) the chocographs in this web page but when i was playing i discovered 2 more and there are lots of slots without a chocograph are them secret? or should i :twak: myself for believing i founded secret chocographs? :D :(

there are 24 chocographs (not counting the pieces) but our ffix section only mentions 20. The others are not secret, we just forgot to include them I guess.