    New chain ID            Original chain ID

8ppl-pdb-bundle1.pdb:
           A                        I3
           B                        I4
           C                        I5
           D                        I6
           E                        I8
           F                        Io
           G                        Ip
           H                        Iq
           I                        Ir
           J                        Is
           K                        It
           L                        Iu
           M                        Iv
           N                        Iw
           O                        Ix
           P                        Iy
           Q                        A2
           R                        AA
           S                        AB
           T                        AC
           U                        AD
           V                        AE
           W                        AF
           X                        AG
           Y                        AH
           Z                        AI
           a                        AJ
           b                        AK
           c                        AL
           d                        AM

8ppl-pdb-bundle2.pdb:
           A                        AN
           B                        AO
           C                        AP
           D                        AQ
           E                        AR
           F                        AS
           G                        AT
           H                        AU
           I                        AV
           J                        AW
           K                        AX
           L                        AY
           M                        AZ
           N                        Aa
           O                        Ab
           P                        Ac
           Q                        Ad
           R                        Ae
           S                        Af
           T                        Ag
           U                        Ah
           V                        Aj
