The schematic depiction includes {HEAD ~ three pieces} of wood 1a, {TAIL ~ 1b}, and 1c shown before and after alignment for cutting 
of
The schematic depiction includes { HEAD ~ three pieces } of wood 1a , { TAIL ~ 1b } , and 1c shown before and after alignment for cutting
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH