The substrate has a first surface and a second surface spaced in {TAIL ~ a predetermined interval} apart from {HEAD ~ the first surface} is prepared 
The substrate has a first surface and a second surface spaced in { TAIL ~ a predetermined interval } apart from { HEAD ~ the first surface } is prepared
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH