{TAIL ~ PWM patterns} corresponding to {HEAD ~ substantially similar delta sigma modulator input signal levels} have substantially identical pulse widths 
{ TAIL ~ PWM patterns } corresponding to { HEAD ~ substantially similar delta sigma modulator input signal levels } have substantially identical pulse widths
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH