For example, if the first seam is made generally along edge B, {HEAD ~ a second seam} can be made along {TAIL ~ edge A}, or vice versa, by the same process 
For example , if the first seam is made generally along edge B , { HEAD ~ a second seam } can be made along { TAIL ~ edge A } , or vice versa , by the same process
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH