{HEAD ~ The struts} extend from the ends of the working part at an angle to the base so that the junctures of the struts and {TAIL ~ base} are some distance from the ends of the base 
{ HEAD ~ The struts } extend from the ends of the working part at an angle to the base so that the junctures of the struts and { TAIL ~ base } are some distance from the ends of the base
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH