    New chain ID            Original chain ID

7n8b-pdb-bundle1.pdb:
           A                        A1
           B                        A3
           C                        A4
           D                        AA
           E                        AB
           F                        AC
           G                        AD
           H                        AE
           I                        AF
           J                        AG
           K                        AH
           L                        AI
           M                        AJ
           N                        AL
           O                        AM
           P                        AN
           Q                        AO

7n8b-pdb-bundle2.pdb:
           A                        AP
           B                        AQ
           C                        AR
           D                        AS
           E                        AT
           F                        AU
           G                        AV
           H                        AW
           I                        AX
           J                        AY
           K                        AZ
           L                        Aa
           M                        Ab
           N                        Ac
           O                        Ad
           P                        Ae
           Q                        Af
           R                        Ag
           S                        Ah
           T                        Ai
           U                        Aj
           V                        Ak
           W                        Al
           X                        Am
           Y                        An
           Z                        Ao
           a                        Ap
           b                        BA
           c                        BB
           d                        BC
           e                        BD
           f                        BE
           g                        BF
           h                        BG
           i                        BH
           j                        BI
           k                        BJ
           l                        BK
           m                        BL
           n                        BM
           o                        BN
           p                        BO
           q                        BP
           r                        BQ
           s                        BR
           t                        BS
           u                        BT
           v                        BU
           w                        BV
           x                        BW
           y                        BX
           z                        BY
           0                        BZ
           1                        Ba
           2                        Bb
           3                        Bc
           4                        Bd
           5                        Be
           6                        Bf
           7                        Bg
           8                        Bh

7n8b-pdb-bundle3.pdb:
           A                        B5
