{HEAD ~ A helicopter} above the tree is connected to a point near {TAIL ~ the top} of the trunk 
{ HEAD ~ A helicopter } above the tree is connected to a point near { TAIL ~ the top } of the trunk
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH