No brake preasure

I had both rear brake cylinders go out. When I replaced them I went ahead and replaced the brake pads and shoes on front and rear as well as installed new drums in rear, and in doing so I noticed the right rear and left front brakes had not been applying, after replacing all mentioned parts. I went to bleed the system the right front and left rear had great pressure and the left front and right rear had very little. I drove the car for a week and re-bleed system and still same issue. Almost no fluid pressure at left front and right rear and they and neither left front or right rear are applying. The right front and left rear work great. Any advice?