1	1LD	5-fluorocytosine	1.000
2	CYT	6-aminopyrimidin-2(1h)-one	0.889
3	DJP	5-fluoropyrimidin-2-ol	0.889
4	17E	5-methylcytosine	0.800
5	1MC	1-methylcytosine	0.800
6	3MC	3-methylcytosine	0.800
7	6UA	6-aminopyrimidine-2,4(3h,5h)-dione	0.800
8	FPY	(4s)-5-fluoro-4-hydroxy-3,4-dihydropyrimidin-2(1h)-one	0.800
9	URF	5-fluorouracil	0.800
10	71O	Pyrimidin-2-ol	0.778
11	L60	1,3-diazinan-2-one	0.778
12	FOU	(5s,6r)-5-fluoro-6-hydroxydihydropyrimidine-2,4(1h,3h)-dione	0.727
13	JFD	6-amino-5-bromo-1,2,3,4-tetrahydropyrimidine-2,4-dione	0.727
14	URN	5,6-diaminopyrimidine-2,4(1h,3h)-dione	0.727
15	5AZ	6-amino-1,3,5-triazin-2(1h)-one	0.700
16	8GF	2-methylpyrimidin-4-amine	0.700
17	DUC	Dihydropyrimidine-2,4(1h,3h)-dione	0.700
18	HPY	4-hydroxy-3,4-dihydro-1h-pyrimidin-2-one	0.700
19	LDB	4-thiouracil	0.700
20	LG3	Pyrimidine-2,4-diamine	0.700
21	OS0	4-oxidanyl-3,4-dihydro-1h-pyrimidin-2-one	0.700
22	TI5	5-methylpyrimidin-4-amine	0.700
23	URA	Uracil	0.700