{HEAD ~ The unitary mounting wall} includes {TAIL ~ mounting holes} extending horizontally in the inner side surface above the mounting holes 
includes
{ HEAD ~ The unitary mounting wall } includes { TAIL ~ mounting holes } extending horizontally in the inner side surface above the mounting holes
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH