The particular grades of {HEAD ~ PET} and LCP within {TAIL ~ these tests} were grouped for comparison as examples 1 5, 6 9, 10 12, and 13 16 
The particular grades of { HEAD ~ PET } and LCP within { TAIL ~ these tests } were grouped for comparison as examples 1 5 , 6 9 , 10 12 , and 13 16
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH