What does Exodus 26:4 mean?

And thou shalt make loops of blue upon the edge of the one curtain from the selvedge in the coupling; and likewise shalt thou make in the edge of the curtain that is outmost in the second coupling.

And thou shalt make loops of blue upon the edge of the one curtain from the selvedge in the coupling; and likewise shalt thou make in the uttermost edge of another curtain, in the coupling of the second.

And thou shalt make loops of blue upon the edge of the one curtain from the selvedge in the coupling; and likewise shalt thou make in the edge of the curtain that is outmost in the second coupling.

And you are to put twists of blue cord on the edge of the outside curtain of the first group of five, and on the edge of the outside curtain of the second group of five;

`And thou hast made loops of blue upon the edge of the one curtain, at the end in the joining; and so thou makest in the edge of the outermost curtain, in the joining of the second.

Thou shalt make loops of violet in the sides and tops of the curtains, that they may be joined one to another.

And thou shalt make loops of blue on the edge of the one curtain at the end of the coupling; and likewise shalt thou make [them] in the edge of the outermost curtain in the other coupling.