'Coupled' in the Bible

Five curtains shall be coupled together one to another; and the other five curtains shall be coupled one to another.

He coupled five curtains to one another, and the other five curtains he coupled one to another.

He made fifty clasps of gold, and coupled the curtains one to another with the clasps: so the tabernacle was a unit.

He coupled five curtains by themselves, and six curtains by themselves.