The portion of {HEAD ~ the clock tree} is coupled to receive the control signal for collectively conditionally gating {TAIL ~ the plurality} of clocks 
The portion of { HEAD ~ the clock tree } is coupled to receive the control signal for collectively conditionally gating { TAIL ~ the plurality } of clocks
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH