#FIG 3.2  Produced by xfig version 3.2.5-alpha5
Landscape
Center
Metric
A4      
100.00
Single
-2
1200 2
6 495 405 1080 1845
2 2 0 1 0 7 50 -1 -1 0.000 0 0 -1 0 0 5
	 495 405 810 405 810 1845 495 1845 495 405
4 0 0 50 -1 0 12 0.0000 2 180 525 540 630 $P_0$\001
-6
6 1305 405 1890 1845
2 2 0 1 0 7 50 -1 -1 0.000 0 0 -1 0 0 5
	 1305 405 1620 405 1620 1845 1305 1845 1305 405
4 0 0 50 -1 0 12 0.0000 2 180 525 1350 630 $P_1$\001
-6
2 1 0 1 0 7 50 -1 -1 0.000 0 0 -1 1 0 2
	0 0 1.00 60.00 120.00
	 810 540 1350 765
2 1 0 1 0 7 50 -1 -1 0.000 0 0 -1 1 0 2
	0 0 1.00 60.00 120.00
	 1305 855 765 1080
2 1 0 1 0 7 50 -1 -1 0.000 0 0 -1 1 0 2
	0 0 1.00 60.00 120.00
	 818 1193 1350 1440
2 1 0 1 0 7 50 -1 -1 0.000 0 0 -1 1 0 2
	0 0 1.00 60.00 120.00
	 1308 1492 765 1710
2 1 0 1 0 7 50 -1 -1 0.000 0 0 -1 1 0 2
	0 0 1.00 60.00 120.00
	 360 405 360 1845
4 0 0 50 -1 0 12 0.0000 2 165 270 225 585 $t$\001