Steps:

1. Draw a rectangular outline with dimensions of 50 for the length and 42 for the width.
2. Draw the centerline of the rectangle.
3. Draw a circle with a radius of 5 using the top midpoint as the center.
4. Draw a circle with a radius of 6, centered at a distance of 14 from the left-side midpoint. Draw a horizontal line intersecting with the left-side line.
5. Use a circle with a radius of 26, centered at a distance of 14 from the right-side midpoint, as an auxiliary circle.
6. Draw an auxiliary line with an angle of 150 degrees, using the auxiliary circle’s center as the vertex.
7. Use the “Ellipse-Center” command to draw an ellipse with a major axis length of 8 and a minor axis length of 3.
8. Use the “Ellipse-Center” command to draw an ellipse with a major axis length of 4 and a minor axis length of 2, snapping to the auxiliary line.
9. Mirror and trim the shapes accordingly.
10. Add annotations to the drawing.