when manufacturing {HEAD ~ a first range unit} having {TAIL ~ a specified width WU1} and cooktop configuration C1: 
when manufacturing { HEAD ~ a first range unit } having { TAIL ~ a specified width WU1 } and cooktop configuration C1 :
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH