The first attenuator is switched after a syllable delay, and {HEAD ~ the second attenuator} is switched after {TAIL ~ a yet longer delay} 
is switched after
The first attenuator is switched after a syllable delay , and { HEAD ~ the second attenuator } is switched after { TAIL ~ a yet longer delay }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL