O1223
T1M6
M3S1000
G54G90G0X-72Y-72G43H1
Z100
Z5
#1=-1
WHILE[#1GE-10]DO1
#2=-50
WHILE[#2LE50]DO2
G0Y#2Z#1
G1X50F100
G91G0Z1
G90X-72
#2=#2+10
END2
#1=#1-1
END1
G0Z50
M30