{TAIL ~ The second solution} is then added in increments to the first solution while stirring to precipitate a mixture of oxygen containing compounds of said first element, said {HEAD ~ second element}, cerium, and terbium 
{ TAIL ~ The second solution } is then added in increments to the first solution while stirring to precipitate a mixture of oxygen containing compounds of said first element , said { HEAD ~ second element } , cerium , and terbium
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 OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH