In one embodiment, the device includes {TAIL ~ numerous flowpaths} that include an active region and {HEAD ~ an inactive region} 
In one embodiment , the device includes { TAIL ~ numerous flowpaths } that include an active region and { HEAD ~ an inactive region }
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD