{HEAD ~ An angular position detector} generates {TAIL ~ a reference position signal} representative of a predetermined crank angle of each engine cylinder in synchronism with the rotation of an internal combustion engine 
generates
{ HEAD ~ An angular position detector } generates { TAIL ~ a reference position signal } representative of a predetermined crank angle of each engine cylinder in synchronism with the rotation of an internal combustion engine
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH