1	1RT	4-amino-2-oxo-1,2-dihydropyrimidine-5-carboxylic acid	1.000
2	5CU	2,4-dioxo-1,2,3,4-tetrahydropyrimidine-5-carboxylic acid	0.833
3	17E	5-methylcytosine	0.818
4	FYU	2,4-dioxo-1,2,3,4-tetrahydropyrimidine-5-carbaldehyde	0.750
5	HMH	4-amino-5-hydroxymethyl-2-methylpyrimidine	0.750
6	HMU	5-hydroxymethyl uracil	0.750
7	OA7	6-hydroxypyridine-3-carboxylic acid	0.750
8	CYT	6-aminopyrimidin-2(1h)-one	0.727
9	TI5	5-methylpyrimidin-4-amine	0.727