{TAIL ~ The wood composite assembly} 7 contacts {HEAD ~ the sprocket} 8 first and this imparts an initial rapid compression action to the assembly 7  
{ TAIL ~ The wood composite assembly } 7 contacts { HEAD ~ the sprocket } 8 first and this imparts an initial rapid compression action to the assembly 7
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH