Ellipse

$x=3+12 \sqrt{2} \cos \theta, y=18 \sin \theta$

$x=3+18 \cos \theta, y=12 \sqrt{2} \sin \theta$

$x=18 \cos \theta, y=3+12 \sqrt{2} \sin \theta$

$x=3+4 \sqrt{2} \cos \theta, y=18 \sin \theta$