{HEAD ~ The present invention} relates to {TAIL ~ a chain case structure} for an engine, and more particularly, to a chain case structure for an engine equipped with hydraulic control valves of a variable valve actuation mechanism 
relates to
{ HEAD ~ The present invention } relates to { TAIL ~ a chain case structure } for an engine , and more particularly , to a chain case structure for an engine equipped with hydraulic control valves of a variable valve actuation mechanism
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