| Ia: Val-Ile-Leu-Met-Arg-Cys | Ib: Glu-Gln-Lys | Ic: Tyr-Trp |
| IIa: Ala-Ser-Gly-Thr-Pro-His | IIb: Asp-Asn-Lys | IIc: Phe-Pyl-Sep |
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