The memory stores {TAIL ~ one or more groups} of data, each containing bending conditions, a bend angle and {HEAD ~ at least one penetration depth} 
The memory stores { TAIL ~ one or more groups } of data , each containing bending conditions , a bend angle and { HEAD ~ at least one penetration depth }
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD