J is one or more of {HEAD ~ Y}, {TAIL ~ La}, Ce, Eu, Th, U, and the remaining lanthanides and j is from 0 to 3 
J is one or more of { HEAD ~ Y } , { TAIL ~ La } , Ce , Eu , Th , U , and the remaining lanthanides and j is from 0 to 3
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH 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