[dev GR;FONT SWISSL;SHADE OFF]
[PISHAD;origin -3,0]
[PIE 6,5,2.,8.33,8.33,8.33,8.33,8.33,8.33,8.33,8.33,8.33,8.33,8.33]
[MOVE 8.15,5.5]1
[MOVE 7.55,6.5]2
[MOVE 6.5,7.15]3
[MOVE 5.1,7.05]4
[MOVE 4.15,6.4]5
[MOVE 3.6,5.4]6
[MOVE 3.6,4.05]7
[MOVE 4.2,3.1]8
[MOVE 5.25,2.45]9
[MOVE 6.3,2.45]10
[move 7.4,3]11
[move 8.1,4.15]12
[origin 7,0;PISHAD 1,3,6,1,3,6,1,3,6,1,3,6]
[PIE 6,5,2.,8.33,-8.33,-8.33,8.33,8.33,8.33,8.33,8.33,8.33,8.33,8.33]
[MOVE 8.15,5.5]1
[MOVE 8.0,7.05]2
[MOVE 6.6,7.75]3
[MOVE 5.1,7.05]4
[MOVE 4.15,6.4]5
[MOVE 3.6,5.4]6
[MOVE 3.6,4.05]7
[MOVE 4.2,3.1]8
[MOVE 5.25,2.45]9
[MOVE 6.3,2.45]10
[move 7.4,3]11
[move 8.1,4.15]12
[origin 0,0;font simplx;size .1;move .2,6;angle 270]Figure 18