The cross wires also have a pattern of their own Understand the cross wires: what they do and how they are attached. What they do is to keep the 4 bamboos of each square together and they make sure the square remains a squire, there is no flexibility.
There are 4 cross wires for each square. Each cross wire hooks in into the bamboo at a corner and are tied together in the middle with a end of rope.
Clowns army Anna has taken out a set of 4 cross wires from the bundle, while making sure they do not get entangled.