beginfig(1);
u =         0.5000000000 cm;
draw (0,0)--(0,        3.9997993110u)--(        7.9993979180u,        3.9997993110u)--(        7.9993979180u,0)--cycle;

draw fullcircle
     xscaled          2.0000000000u
     yscaled          2.0000000000u
     shifted (        6.9993979180u,        1.0000000000u);
draw fullcircle
     xscaled          2.0000000000u
     yscaled          2.0000000000u
     shifted (        1.0000000000u,        1.0000000000u);
draw fullcircle
     xscaled          2.0000000000u
     yscaled          2.0000000000u
     shifted (        2.9997993060u,        1.0000000000u);
draw fullcircle
     xscaled          2.0000000000u
     yscaled          2.0000000000u
     shifted (        4.9995986119u,        1.0000000000u);
draw fullcircle
     xscaled          2.0000000000u
     yscaled          2.0000000000u
     shifted (        2.9997993060u,        2.9997993110u);
draw fullcircle
     xscaled          2.0000000000u
     yscaled          2.0000000000u
     shifted (        1.0000000000u,        2.9997993110u);
draw fullcircle
     xscaled          2.0000000000u
     yscaled          2.0000000000u
     shifted (        4.9995986120u,        2.9997993110u);
draw fullcircle
     xscaled          2.0000000000u
     yscaled          2.0000000000u
     shifted (        6.9993979180u,        2.9997993110u);
endfig;
end;