Cobalt oxide and hydroxide of various oxidation states is {HEAD ~ the preferred material} for {TAIL ~ encapsulation} 
Cobalt oxide and hydroxide of various oxidation states is { HEAD ~ the preferred material } for { TAIL ~ encapsulation }
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL