    New chain ID            Original chain ID

9h19-pdb-bundle1.pdb:
           A                        Aa
           B                        Ba
           C                        Ab
           D                        Bb
           E                        Ac
           F                        Bc
           G                        Ad
           H                        Bd
           I                        Ae
           J                        Be
           K                        Af
           L                        Bf
           M                        Ag
           N                        Bg
           O                        Ah
           P                        Bh
           Q                        Ai
           R                        Bi
           S                        Aj
           T                        Bj
           U                        Ak
           V                        Bk
           W                        Al
           X                        Bl
           Y                        Am
           Z                        Bm
           a                        An
           b                        Bn
           c                        Ao
           d                        Bo
           e                        Ap
           f                        Bp
           g                         S
           h                         L
           i                         M
           j                         H
           k                         K
           l                         C
           m                        AA
           n                        BA
           o                        BB
           p                        AB
           q                        AC
           r                        BC
           s                        BD
           t                        AD
           u                        AE
           v                        BE
           w                        BF
           x                        AF
           y                        AG
           z                        BG
           0                        AH
           1                        BH
           2                        AI
           3                        BI
           4                        AJ
           5                        BJ
           6                        AK
           7                        BK
           8                        AL
           9                        BL

9h19-pdb-bundle2.pdb:
           A                        AM
           B                        BM
           C                        BN
           D                        AN
           E                        AO
           F                        BO
           G                        BP
           H                        AP
           I                        AQ
           J                        BQ
           K                        BR
           L                        AR
           M                        BS
           N                        AS
           O                        BT
           P                        AT
           Q                        BU
           R                        AU
           S                        AV
           T                        BV
           U                        AW
           V                        BW
           W                        AX
           X                        BX
