When FET 108 conducts, line 114 which connects to {TAIL ~ the gate input} of {HEAD ~ FET} 116 connects to ground 112 
When FET 108 conducts , line 114 which connects to { TAIL ~ the gate input } of { HEAD ~ FET } 116 connects to ground 112
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH