In one embodiment, an inner layer of {HEAD ~ the multi layer substrate} can be provided with {TAIL ~ perforations} 
In one embodiment , an inner layer of { HEAD ~ the multi layer substrate } can be provided with { TAIL ~ perforations }
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL