A portion of the clock tree supplies {HEAD ~ a plurality} of {TAIL ~ clocks} to the execution circuit, the plurality of clocks including at least a first clock clocking the first subcircuit and at least a second clock clocking the second subcircuit 
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A portion of the clock tree supplies { HEAD ~ a plurality } of { TAIL ~ clocks } to the execution circuit , the plurality of clocks including at least a first clock clocking the first subcircuit and at least a second clock clocking the second subcircuit
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL 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