v 0 2 0
v 1 4 0
v 5 4 0
v 6 2 0
v 5 0 0
v 1 0 0
l 1 2
l 2 3
l 3 4
l 4 5
l 5 6
l 6 1
v 0 2 -6
v 1 4 -6
v 5 4 -6
v 6 2 -6
v 5 0 -6
v 1 0 -6
l 7 8
l 8 9
l 9 10
l 10 11
l 11 12
l 7 12
l 1 4
l 2 5
l 3 6
l 7 10
l 8 11
l 12 9
v 3 2.5 -2
v 3 2.5 -4
l 13 14
v 4 2.5 -2
v 4 2.5 -4
l 15 16
l 13 15
l 14 16
v 3 1.5 -2
v 3 1.5 -4
l 17 18
v 4 1.5 -2
v 4 1.5 -4
l 17 13
l 18 14
l 19 20
l 19 15
l 20 16
l 18 14
l 19 17
l 20 18
v 3.5 2 -1
l 15 21
l 13 21
l 17 21
l 19 21
v 3.5 2 -5
l 22 16
l 22 18
l 22 20
l 22 14
l 7 22
l 8 22
l 9 22
l 22 10
l 22 11
l 22 12 
l 21 1
l 21 2
l 21 3
l 21 4
l 21 5
l 21 6
v 3 1.5 -2.5
v 3 1.5 -2.8
v 3 1.25 -2.65
l 23 25
l 24 25
v 3 1.5 -3.5
v 3 1.5 -3.8
v 3 1.25 -3.65
l 26 28
l 27 28
v 3.5 1.5 -3.65
l 28 29
v 3.5 1.5 -2.65
l 25 30