cooktop configuration C1 provides only one type of {HEAD ~ top cooking system}, in step {TAIL ~ the third cooktop unit} is preassembled with a single cooking system type prior to mounting on the base units 
cooktop configuration C1 provides only one type of { HEAD ~ top cooking system } , in step { TAIL ~ the third cooktop unit } is preassembled with a single cooking system type prior to mounting on the base units
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH