    New chain ID            Original chain ID

9srd-pdb-bundle1.pdb:
           1                         1
           2                         2

9srd-pdb-bundle2.pdb:
           A                         3
           B                        AA
           C                        AB
           D                        AC
           E                        AD
           F                        AE
           G                        AF
           H                        AG
           I                        AH
           J                        AI
           K                        AJ
           L                        AK
           M                        AL
           N                        AM
           O                        AN
           P                        AP
           Q                        AQ
           R                        AR
           S                        AS
           T                        AU
           U                        AV
           V                        AW
           W                        AX
           X                        AY
           Y                        AZ
           Z                        A0
           a                        A3
           b                        AT
           c                        AO
           d                        BB
           e                        BY
           f                        BO
           g                        BC
           h                        B5
           i                        BL
           j                        Bf
           k                        BU
           l                        Bb
           m                        Be
           n                        BE
           o                        Ba
           p                        BT
           q                        BW
           r                        Bi
           s                        BI
           t                        BR
           u                        BK
           v                        BQ
           w                        BV
           x                        Bj
           y                        BG
           z                        BD
           0                        BF
           1                        BZ
           2                        B6
           3                        BP
           4                        BM
           5                        BS
           6                        Bd
           7                        BN
           8                        Bg
           9                        Bc

9srd-pdb-bundle3.pdb:
           A                        BJ
           B                        Bl
           C                        B4
           D                        Bk
           E                         H
