turtle.setheading(0)
turtle.circle(50, 90)
turtle.circle(-50, -90)
turtle.circle(50, 90)
turtle.circle(-50, -90)

turtle.setheading(-180)
turtle.circle(50, 90)
turtle.circle(-50, -90)
turtle.circle(-50, -90)
turtle.circle(50, 90)

turtle.setheading(90)
turtle.circle(50, 90)
turtle.circle(50, 90)
turtle.circle(-50, -90)
turtle.circle(-50, -90)

turtle.setheading(270)
turtle.circle(-50, -90)
turtle.circle(50, 90)
turtle.circle(50, 90)
turtle.circle(-50, -90)