1	NCB	N-carbamoyl-alanine	1.000
2	EJJ	N-carbamoyl-glycine	0.889
3	CDV	3-methyl-2-ureido-butyric acid	0.818
4	0FL	3-amino-N-formyl-L-alanine	0.800
5	AYA	N-acetylalanine	0.800
6	CMS	Carbamoyl sarcosine	0.800
7	NXA	N-carboxyalanine	0.800
8	UGC	(2s)-(carbamoylamino)(hydroxy)ethanoic acid	0.800
9	UGY	(2s)-amino(carbamoylamino)ethanoic acid	0.800
10	33X	N-methyl-D-alanine	0.778
11	DAM	N-methyl-alpha-beta-dehydroalanine	0.778
12	MAA	N-methyl-L-alanine	0.778
13	XH1	N-propan-2-ylurea	0.778
14	CDT	4-methylsulfanyl-2-ureido-butyric acid	0.750
15	NCD	N-carbamoyl-L-aspartate	0.750
16	W9J	N-carbamoyl-L-methionine	0.750
17	FVA	N-formyl-L-valine	0.727
18	GZJ	(2s)-2-(acetylamino)butanoic acid	0.727
19	J3D	N-carboxy-L-cysteine	0.727
20	SAC	N-acetyl-serine	0.727
21	SC2	N-acetyl-L-cysteine	0.727
22	5JP	N-methyl-L-serine	0.700
23	AAC	Acetylamino-acetic acid	0.700
24	DSE	N-methyl-D-serine	0.700
25	HDA	Hadacidin	0.700
26	LAL	N,N-dimethyl-L-alanine	0.700
27	MDH	N-methyldehydrobutyrine	0.700
28	NCY	N-methylcysteine	0.700
29	NMG	Guanidino acetate	0.700