{HEAD ~ The third merchandiser module} is positioned next and coupled to the first merchandiser module and {TAIL ~ the second merchandiser module} 
{ HEAD ~ The third merchandiser module } is positioned next and coupled to the first merchandiser module and { TAIL ~ the second merchandiser module }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL REL OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL