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.

1

2

3

4

5

6

7 Normal unit

8 Stop unit (mind flaps)

Flap

Pocket

9 Put flaps in pockets of other unit to couple

two units.

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