
| L-alanine-D-alanine-L-alanine |
| AdAA | |

| L-alanine-D-alanine-L-glycine |
| AdAG | |

| L-alanine-D-alanine-L-proline |
| AdAP | |

| L-alanine-D-proline-L-alanine |
| AdPA | |

| L-alanine-D-proline-L-glycine |
| AdPG | |

| L-alanine-D-proline-L-proline |
| AdPP | |

| L-glycine-D-alanine-L-alanine |
| GdAA | |

| L-glycine-D-alanine-L-glycine |
| GdAG | |

| L-glycine-D-alanine-L-proline |
| GdAP | |

| L-glycine-D-proline-L-alanine |
| GdPA | |

| L-glycine-D-proline-L-glycine |
| GdPG | |

| L-glycine-D-proline-L-proline |
| GdPP | |

| L-proline-D-alanine-L-alanine |
| PdAA | |

| L-proline-D-alanine-L-glycine |
| PdAG | |

| L-proline-D-alanine-L-proline |
| PdAP | |

| L-proline-D-proline-L-alanine |
| PdPA | |

| L-proline-D-proline-L-glycine |
| PdPG | |

| L-proline-D-proline-L-proline |
| PdPP | |