{HEAD ~ A protective sheet} is fixed to a jig, and {TAIL ~ regions} of the protective sheet corresponding to regions where dicing cut is to be performed are removed to form grooves 
is fixed to
{ HEAD ~ A protective sheet } is fixed to a jig , and { TAIL ~ regions } of the protective sheet corresponding to regions where dicing cut is to be performed are removed to form grooves
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH