{HEAD ~ The portion} of the clock tree is coupled to receive the control signal for collectively conditionally gating the plurality of clock, and is also configured to individually conditionally gate at least some of the plurality of clocks responsive to activity in the respective subcircuits of {TAIL ~ the execution circuit} 
{ HEAD ~ The portion } of the clock tree is coupled to receive the control signal for collectively conditionally gating the plurality of clock , and is also configured to individually conditionally gate at least some of the plurality of clocks responsive to activity in the respective subcircuits of { TAIL ~ the execution circuit }
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 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 TAIL TAIL