wipe 0 0 0
ink 200 50 255
circle w/2 h/2 (+ 30 (* 25 (sin (/ f 6))))
ink 50 200 255
circle w/2 h/2 (+ 20 (* 15 (sin (/ f 4))))
ink 255 255 255
circle w/2 h/2 (+ 5 (* 5 (sin (/ f 3))))