aliphatic Amino Acids:
1. C, valine, bright, different bright, egg, winter, Valley, Lai, Jing, gan, Silk, Su, 2. Cysteamine, glutamine, amino acid
3. Aromatic amino acids: phenylalanine, tyrosine
4. Heterocyclic amino Acids: histidine, tryptophan
5. Heterocyclic amino acid: proline