4FEN|1|B|A|21	ns3O2'	4FEN|1|B|U|22	
4FEN|1|B|U|22	nsO2'3	4FEN|1|B|A|21	
4FEN|1|B|U|22	sO4'3	4FEN|1|B|A|23	
4FEN|1|B|A|23	s3O4'	4FEN|1|B|U|22	
4FEN|1|B|U|63	sO4'5	4FEN|1|B|A|64	
4FEN|1|B|A|64	s5O4'	4FEN|1|B|U|63