Ok I just tried this and this is how it went.
1. The cushion that is on the bottom by outside window put aside for now, along with the two arm rest.
2. The cushions on the seat close to the kitchen you leave completely alone.
3. Next you will work with the cushions close to drivers sea.The bottom cushion you pull towards the middle of the bed. The back cushion you just pull down and laid it flat. Now move the bottom cushion up against it.
4.Next lay the bottom cushion from the outside windows against one of the other bottom cushions.
5. Fill in with the arm rest.
I tried to attach a pdf drawing of this let me know if it doesn't work