The cam positions of the camshaft include {TAIL ~ secondary lobes} in conjunction with {HEAD ~ normal primary lobes} 
The cam positions of the camshaft include { TAIL ~ secondary lobes } in conjunction with { HEAD ~ normal primary lobes }
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD