    New chain ID            Original chain ID

9ww6-pdb-bundle1.pdb:
           A                        AA
           B                        AB
           C                        AC
           D                        AD
           E                        AE
           F                        AF
           G                        AG
           H                        AH

9ww6-pdb-bundle2.pdb:
           A                        AI
           B                        AJ
           C                        AK
           D                        AL
           E                        AM
           F                        AN
           G                        AO
           H                        AP
           I                        AQ
           J                        AR
           K                        AS
           L                        AT
           M                        AU
           N                        AV
           O                        AW
           P                        AX
           Q                        AY
           R                        AZ
           S                        Aa
           T                        Ab
           U                        Ac
           V                        Ad
           W                        Ae
           X                        Af
           Y                        Ag
           Z                        Ah
           a                        Ai
           b                        Aj
           c                        Ak
           d                        Al
           e                        Am
           f                        An
           g                        Ao
           h                        Aq
           i                        Ar
           j                        As
           k                        BA
           l                        BB
           m                        BC
           n                        BD
           o                        BE
           p                        BF
           q                        BG
           r                        BH
           s                        BI
           t                        BJ
           u                        BK
           v                        BL
           w                        BM
           x                        BN
           y                        BO
           z                        BP
           0                        BQ
           1                        BR
           2                        BS
           3                        BT

9ww6-pdb-bundle3.pdb:
           A                        BU
           B                        BV
           C                        BW
           D                        BX
           E                        BY
           F                        BZ
           G                        Ba
           H                        Bb
           I                        Bc
           J                        Bd
           K                        Be
           L                        Bf
           M                        Bg
           N                        Bh
