The pattern lines constituting the driving pattern 2 and {HEAD ~ the pattern lines} constituting {TAIL ~ the pickup pattern} 4 are alternately arranged 
The pattern lines constituting the driving pattern 2 and { HEAD ~ the pattern lines } constituting { TAIL ~ the pickup pattern } 4 are alternately arranged
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH