var('t')
r1=vector([70*cos(t), 0,70*sin(2*t)] )
r2=vector([-t,0,0])
plot1=parametric_plot3d(r1,(t,0,pi/2),color='red',thickness=.8)
plot2=parametric_plot3d(r2,(t,0,20),color='green',thickness=.8)
plot3=parametric_plot3d(((-15)*sin(t),t-3,((-30)*cos(t)+20)), (t, 0, 2.1 * pi), thickness=.8, color='green')
plot4=parametric_plot3d(r2,(t,0,14),color='green',thickness=.8)
plot5=parametric_plot3d(((5*cos(t)-70), 5*sin(t), t+25), (t, 0, 7 * pi), thickness=.8, color='blue')
#5 is changing width, -50 is changing were is on x-axis, 20 is changing height
plot6=parametric_plot3d((t-50, 5*sin(t), (5*cos(t)+5)), (t, 0, 7 * pi), thickness=.8, color='green')
show(plot1+plot2+plot3+plot4+plot5+plot6, aspect_ratio=1)