You may couple this units in several ways. In this diagrams a rectangle
of 1:3 is used to create a garland.
Other constellations are possible too, as shown in the diagrams at the end.
7 Normal unit 8 Stop unit (mind flaps)
9 Put flaps in pockets of other unit to couple 10 Couple 4 units like this
11 Bend units as shown
to lock firmly 12 Couple units to this two by two to make
a garland. Use stop unit at the ends.
13 This network consists of two kinds of rings:
6 unit rings and 2 unit rings.
14 Crystal of 4 unit rings in three dimensions