{HEAD ~ a variable valve timing mechanism} which variably controls the opening and closing timings of the intake valve by changing a phase between a crankshaft of {TAIL ~ the internal combustion engine} and an intake camshaft 
{ HEAD ~ a variable valve timing mechanism } which variably controls the opening and closing timings of the intake valve by changing a phase between a crankshaft of { TAIL ~ the internal combustion engine } and an intake camshaft
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH