





On shooters there are numbers.
For everyone beads of the first core of any chain there is a small arrow.
For the numbers corresponding to the ends of cores chains, there are wider shooters.
For the numbers corresponding to the ends of chains are available even more wide shooters.
Cards for each chain are fastened by a rubber ring.
Shooters for a chain of beads are described below.
Direct purpose: to construct linear numbers.
To consider numbers, passing some of them by a certain rule the rhythmic numbers.
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