how do you get them? i tried doing it the same way as natural but i couldnt.
it's all the same, regardless of the key. take the major scale (WWHWWWH), and find the notes. each step has the same chord, regardless of the key. i.e., Bb major scale. third step is D and appropriate chord would be Dmin7.
Please review basic theory via my signature; you've missed something important.