К3} К2={2} К3={3, 4}
Г3={К3, К4} К3={3, 4} К4={5, 6}
Г4={К4, К5}
К4={5, 6} К5={7, 8, 9}Г5={К5, К6} К5={7, 8, 9} К6={10, 11, 12}
Г6={К6, К7} К6={10, 11, 12} К7={13, 14, 15, 16}
Г7={К7, К8} К7={13, 14, 15, 16} К8={17, 18, 19, 20}