Ways of remembering quark structure of mesons?Watch
I can't remember the structure of the 0 versions at the moment, but do you need to remember those is your exam anyway?
Meson + - 0
Pion uD Ud Uu/Dd
Kaon uS Us Ds
You can see that the "antis" are in line with each other for + and -, that helps me a lot
I know the pairs it was just remembering which are antiquarks and which are quarks for me!