; Structure file
DRIFT 10 100
GAP 100000 -30 10 0  
DRIFT 10 100
DRIFT 10 100
GAP 100000 -30 10 0  
DRIFT 10 100
DRIFT 10 100
GAP 100000 -30 10 0  
DRIFT 10 100
DRIFT 10 100
GAP 100000 -30 10 0  
DRIFT 10 100
DRIFT 10 100
GAP 100000 -30 10 0  
DRIFT 10 100
DRIFT 10 100
GAP 100000 -30 10 0  
DRIFT 10 100
DRIFT 10 100
GAP 100000 -30 10 0  
DRIFT 10 100
DRIFT 10 100
GAP 100000 -30 10 0  
DRIFT 10 100
END