Graph[{
{{1,2}},
{{1,3}},
{{1,4}},
{{2,3}},
{{2,4}},
{{3,5}},
{{4,6}},
{{5,7}},
{{5,8}},
{{6,7}},
{{6,8}},
{{7,8}},
{{9,10}},
{{9,11}},
{{9,12}},
{{10,11}},
{{10,13}},
{{11,14}},
{{12,13}},
{{12,15}},
{{13,16}},
{{14,15}},
{{14,16}},
{{15,16}},
{{17,18}},
{{17,19}},
{{17,20}},
{{18,19}},
{{18,21}},
{{19,22}},
{{20,23}},
{{20,24}},
{{21,23}},
{{21,24}},
{{22,23}},
{{22,24}},
{{25,26}},
{{25,27}},
{{25,28}},
{{26,29}},
{{26,30}},
{{27,29}},
{{27,31}},
{{28,30}},
{{28,31}},
{{29,32}},
{{30,32}},
{{31,32}},
{{33,34}},
{{33,35}},
{{33,36}},
{{34,37}},
{{34,38}},
{{35,37}},
{{35,39}},
{{36,38}},
{{36,40}},
{{37,40}},
{{38,39}},
{{39,40}}}, CircularEmbedding[40]]
