G21
M104 P145
M100 P210
M105
G0 Z+2
G0 X-999 Y-999
G0 X15 Y15
G0 Z-999
G0 Z1
M101
G0 Z-1
G4 P2000
G0 Z1
G1 X+50
G1 Y+50
G1 X-50
G1 Y-49
M103
G1 Y-1
G1 Z+0.4
M101
G1 X+50
G1 Y+50
G1 X-50
G1 Y-49
M103
G1 Y-1
G1 Z+0.4
M101
G1 X+50
G1 Y+50
G1 X-50
G1 Y-49
M103
G1 Y-1
G1 Z+0.4
M101
G1 X+50
G1 Y+50
G1 X-50
G1 Y-49
M103
G1 Y-1
G1 Z+0.4
M101
G1 X+50
G1 Y+50
G1 X-50
G1 Y-49
M103
G1 Y-1
G1 Z+0.4
M101
G1 X+50
G1 Y+50
G1 X-50
G1 Y-49
M103
G1 Y-1
G1 Z+0.4
M101
G1 X+50
G1 Y+50
G1 X-50
G1 Y-49
M103
G1 Y-1
G1 Z+0.4
M101
G1 X+50
G1 Y+50
G1 X-50
G1 Y-49
M103
G1 Y-1
G1 Z+0.4
M101
G1 X+50
G1 Y+50
G1 X-50
G1 Y-49
M103
G1 Y-1
G1 Z+0.4
M101
G1 X+50
G1 Y+50
G1 X-50
G1 Y-50
M103
M104 P20
G1 Z10