{TAIL ~ The various embodiments} include {HEAD ~ first layers} that are relatively thick which are interleaved with second layers that are relatively thin as compared to the first layers 
{ TAIL ~ The various embodiments } include { HEAD ~ first layers } that are relatively thick which are interleaved with second layers that are relatively thin as compared to the first layers
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH