Alternatively, the longitudinal members may each be formed of {TAIL ~ a single length} of {HEAD ~ pole} 36, 38, which may be cut in the field as desired 
Alternatively , the longitudinal members may each be formed of { TAIL ~ a single length } of { HEAD ~ pole } 36 , 38 , which may be cut in the field as desired
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH