beginfig(1); u = 0.0500000000 cm; draw ( 0.0000000000u, 0.0000000000u)-- ( 100.0000000000u, 0.0000000000u)-- ( 100.0000000000u, 200.0000000000u)-- ( 0.0000000000u, 200.0000000000u)--cycle; draw fullcircle xscaled 50.0000000000u yscaled 50.0000000000u shifted ( 25.0000000000u, 75.0000000071u); draw fullcircle xscaled 50.0000000000u yscaled 50.0000000000u shifted ( 75.0000000000u, 175.0000000000u); draw fullcircle xscaled 50.0000000000u yscaled 50.0000000000u shifted ( 25.0000000000u, 25.0000000000u); draw fullcircle xscaled 50.0000000000u yscaled 50.0000000000u shifted ( 25.0000000000u, 175.0000000000u); draw fullcircle xscaled 50.0000000000u yscaled 50.0000000000u shifted ( 75.0000000000u, 125.0000000000u); draw fullcircle xscaled 50.0000000000u yscaled 50.0000000000u shifted ( 75.0000000000u, 25.0000000000u); draw fullcircle xscaled 50.0000000000u yscaled 50.0000000000u shifted ( 25.0000000000u, 125.0000000046u); draw fullcircle xscaled 50.0000000000u yscaled 50.0000000000u shifted ( 75.0000000000u, 75.0000000000u); endfig; end;