{HEAD ~ Signal B} is inverted by inverter 326 and subsequently presented to {TAIL ~ the inhibit input} of one shot 312 and the s input of one shot 313 
is presented to
{ HEAD ~ Signal B } is inverted by inverter 326 and subsequently presented to { TAIL ~ the inhibit input } of one shot 312 and the s input of one shot 313
HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH