He made loops of blue yarn on the edge of the last curtain in the first set and did the same on the edge of the outermost curtain in the second set.
Make loops of blue yarn on the edge of the last curtain in the first set, and do the same on the edge of the outermost curtain in the second set.
He joined five of the curtains to each other, and the other five curtains he joined to each other.
He made fifty loops on the one curtain and fifty loops on the edge of the curtain in the second set, so that the loops lined up with each other.