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