According to an exemplary embodiment, {HEAD ~ the cross members} 232 are coupled to the first and second frame members 222, 224 along {TAIL ~ a top surface} of the first and second frame members 222, 224 
are coupled along
According to an exemplary embodiment , { HEAD ~ the cross members } 232 are coupled to the first and second frame members 222 , 224 along { TAIL ~ a top surface } of the first and second frame members 222 , 224
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH