If I like it, it's mine.
If it's in my hand, it's mine.
If I can take it from you, it's mine.
If I had it a little while ago, it's mine.
If it's mine, it must never appear to be yours in any way.
If I'm building something, all the pieces are mine.
If it looks like mine, it is mine.
If I saw it first, it's mine.
If you are playing with something and you put it down, it automatically becomes mine.
If it's broken, it's yours.