beginfig(1);
u =         0.1250000000 cm;
draw 
     (        0.0000000000u,        0.0000000000u)--
     (       80.0000000000u,        0.0000000000u)--
     (       80.0000000000u,       80.0000000000u)--
     (        0.0000000000u,       80.0000000000u)--cycle;
draw fullcircle
     xscaled         20.0000000000u
     yscaled         20.0000000000u
     shifted (       10.0000000000u,       50.0000000097u);
draw fullcircle
     xscaled         20.0000000000u
     yscaled         20.0000000000u
     shifted (       49.9999999768u,       70.0000000000u);
draw fullcircle
     xscaled         20.0000000000u
     yscaled         20.0000000000u
     shifted (       10.0000000000u,       30.0000000049u);
draw fullcircle
     xscaled         20.0000000000u
     yscaled         20.0000000000u
     shifted (       70.0000000000u,       70.0000000000u);
draw fullcircle
     xscaled         20.0000000000u
     yscaled         20.0000000000u
     shifted (       70.0000000000u,       50.0000000228u);
draw fullcircle
     xscaled         20.0000000000u
     yscaled         20.0000000000u
     shifted (       29.9999999844u,       70.0000000000u);
draw fullcircle
     xscaled         20.0000000000u
     yscaled         20.0000000000u
     shifted (       50.0000000117u,       50.0000000000u);
draw fullcircle
     xscaled         20.0000000000u
     yscaled         20.0000000000u
     shifted (       10.0000000000u,       10.0000000000u);
draw fullcircle
     xscaled         20.0000000000u
     yscaled         20.0000000000u
     shifted (       50.0000000000u,       10.0000000000u);
draw fullcircle
     xscaled         20.0000000000u
     yscaled         20.0000000000u
     shifted (       30.0000000000u,       29.9999999996u);
draw fullcircle
     xscaled         20.0000000000u
     yscaled         20.0000000000u
     shifted (       70.0000000000u,       10.0000000000u);
draw fullcircle
     xscaled         20.0000000000u
     yscaled         20.0000000000u
     shifted (       10.0000000000u,       70.0000000000u);
draw fullcircle
     xscaled         20.0000000000u
     yscaled         20.0000000000u
     shifted (       30.0000000000u,       10.0000000000u);
draw fullcircle
     xscaled         20.0000000000u
     yscaled         20.0000000000u
     shifted (       50.0000000000u,       30.0000000000u);
draw fullcircle
     xscaled         20.0000000000u
     yscaled         20.0000000000u
     shifted (       70.0000000000u,       30.0000000372u);
draw fullcircle
     xscaled         20.0000000000u
     yscaled         20.0000000000u
     shifted (       29.9999999903u,       50.0000000000u);
endfig;
end;