    New chain ID            Original chain ID

9ss5-pdb-bundle1.pdb:
           A                        B0
           B                        B1
           C                        B2
           D                        B3
           E                        B4
           F                        B5
           G                        B6
           H                        B7
           I                        B8
           J                        B9
           K                        BB
           L                        BC
           M                        BD
           N                        BE
           O                        BF
           P                        BG
           Q                        BI
           R                        BK
           S                        BM
           T                        BN
           U                        BO
           V                        BP
           W                        BQ
           X                        BR
           Y                        BS
           Z                        BT
           a                        BU
           b                        BV
           c                        BW
           d                        BX
           e                        BY
           f                        D2
           g                        D3
           h                        FS
