While such structural beams exhibit satisfactory strength in tension, {TAIL ~ compression}, and bending, these beams are relatively weak in {HEAD ~ axial torsion} 
While such structural beams exhibit satisfactory strength in tension , { TAIL ~ compression } , and bending , these beams are relatively weak in { HEAD ~ axial torsion }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD