Laying pavement ... But how?

Hello. I have a small terrace of 15m2 that I want to pave. Unfortunately, the arrangement of the stones does not fit properly. Per layer on the pallet, there are 12 stones of 20x20, 8 stones of 20x15, and 8 stones of 20x10 cm. This does not result in a sensible arrangement so that some kind of pattern is created without stones being left over per layer. Does anyone have an idea???

Well, it won't work without trimming

Just a picture from the net...