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