You shall make fifty loops on the edge of the curtain that is outermost in one set and fifty loops on the edge of the curtain that is outermost in the second set.
You shall make loops of blue on the edge of the outermost curtain in the first set, and likewise you shall make loops on the edge of the outermost curtain in the second set.
he made fifty loops on the one curtain, and he made fifty loops on the edge of the curtain that was in the second set; the loops were opposite one another.