a variable valve lift mechanism which increases {HEAD ~ a lift} of the intake valve while delaying the closing timing of {TAIL ~ the intake valve} at least, 
a variable valve lift mechanism which increases { HEAD ~ a lift } of the intake valve while delaying the closing timing of { TAIL ~ the intake valve } at least ,
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH