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