As {HEAD ~ the integral design} of {TAIL ~ the invention} is simple, it can allow DIY by the user 
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As { HEAD ~ the integral design } of { TAIL ~ the invention } is simple , it can allow DIY by the user
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH