/RGB,INDEX,100,100,100,0
/RGB,INDEX,0,0,0,15

L = 1.2
D = 0.05
R = 0.12
H = 0.02

/PREP7

K,,0,0,0
CIRCLE,1,D/2,z,,,4

L,1,2
L,1,3
L,1,4
L,1,5

AL,5,1,6
AL,6,2,7
AL,7,3,8
AL,8,4,5

VEXT,1,4,1,0,0,L-H/2

VEXT,5,,,0,0,H
VEXT,9,,,0,0,H
VEXT,12,,,0,0,H
VEXT,15,,,0,0,H

CIRCLE,6,R,z,,,4

L,6,23
L,6,24
L,6,25
L,6,26

AL,46,51,50
AL,51,52,47
AL,48,52,53
AL,49,50,53

VEXT,33,36,1,0,0,H
VOVLAP,ALL
VGLUE,ALL

/VIEW,1,1
GPLOT