1	HH5	6-iodanyl-7~{H}-purin-2-amine	1.000
2	2BP	9h-purin-2-amine	0.909
3	6AP	9h-purine-2,6-diamine	0.833
4	6GU	6-chloroguanine	0.833
5	DX4	2-amino-1,9-dihydro-6h-purine-6-thione	0.833
6	GUN	Guanine	0.833
7	WUT	9~{H}-purine	0.818
8	6GO	6-O-methylguanine	0.769
9	8IG	8-iodo-guanine	0.769
10	9MG	9-methylguanine	0.769
11	A1IBK	2-azanyl-8-methyl-3,7-dihydropurine-6-thione	0.769
12	A1LXN	2-azanyl-8-methyl-1,9-dihydropurin-6-one	0.769
13	ANG	8-aminoguanine	0.769
14	B55	2-amino-8-sulfanyl-1,9-dihydro-6h-purin-6-one	0.769
15	BRG	8-bromoguanine	0.769
16	MY6	2-amino-7-methyl-1,7-dihydro-6h-purin-6-one	0.769
17	OXG	8-oxoguanine	0.769
18	W5M	9-methyl-9h-purine-2,6-diamine	0.769
19	6MP	6-methylpurine	0.750
20	ADE	Adenine	0.750
21	BP1	6-bromo-7h-purine	0.750
22	ES4	6-chloro-9h-purine	0.750
23	HPA	Hypoxanthine	0.750
24	PM6	9h-purine-6-thiol	0.750
25	NDM	7,9-dimethylguanine	0.714