{TAIL ~ A macro cell} describes an arrangement of cells that may be incorporated into an integrated circuit design and that may include a set of clocked devices and a clock tree subtree for delivering {HEAD ~ a clock signal} to the sinks 
{ TAIL ~ A macro cell } describes an arrangement of cells that may be incorporated into an integrated circuit design and that may include a set of clocked devices and a clock tree subtree for delivering { HEAD ~ a clock signal } to the sinks
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH