Two nonisomorphic regular graphs
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These are the ASCIIsvg.js commands that generate the two graphs:
<script>
function drawPicture(){
initPicture("figure1",-1,1,-1)
marker = "dot"
a = []
n = 9
with (Math)
for (var i = 0; i < n; i++)
a[i] = [cos(PI/4*(-1)*i+PI/2), sin(PI/4*(-1)*i+PI/2)]
path(a)
path([a[0],a[3],a[6],a[1],a[4],a[7],a[2],a[5],
a[0],a[4],a[5],a[1],a[2],a[6],a[7],a[3]])
initPicture("figure2")
marker = "dot"
path(a)
path([a[0],a[2],a[4],a[6],a[0],a[4],a[5],a[7],
a[1],a[3],a[5],a[1],a[2],a[6],a[7],a[3]])
}
</script>