beginfig(1);
u =         0.0833333333 cm;
draw 
     (        0.0000000000u,        0.0000000000u)--
     (      120.0000000000u,        0.0000000000u)--
     (      120.0000000000u,      120.0000000000u)--
     (        0.0000000000u,      120.0000000000u)--cycle;
draw fullcircle
     xscaled         52.0000000000u
     yscaled         52.0000000000u
     shifted (       26.0000000000u,       94.0000000000u);
draw fullcircle
     xscaled         52.0000000000u
     yscaled         52.0000000000u
     shifted (       94.0000000000u,       78.0239451205u);
draw fullcircle
     xscaled         52.0000000000u
     yscaled         52.0000000000u
     shifted (       94.0000000000u,       26.0000000000u);
draw fullcircle
     xscaled         52.0000000000u
     yscaled         52.0000000000u
     shifted (       26.0000000000u,       35.1332730933u);
endfig;
end;