Further {HEAD ~ the chamber} 150 also includes {TAIL ~ a second wall portion} that is disposed along a direction that is at an angle between ten degrees and eighty degrees with respect to channel wall 145 
includes
Further { HEAD ~ the chamber } 150 also includes { TAIL ~ a second wall portion } that is disposed along a direction that is at an angle between ten degrees and eighty degrees with respect to channel wall 145
OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH