The beams 14 have a 1/2 inch square cross section, but {HEAD ~ other suitable shapes} may be used to separate and suspend {TAIL ~ the containers} 12 
The beams 14 have a 1/2 inch square cross section , but { HEAD ~ other suitable shapes } may be used to separate and suspend { TAIL ~ the containers } 12
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH