    New chain ID            Original chain ID

7mud-pdb-bundle1.pdb:
           A                        AC
           B                        AD
           C                        AH
           D                        AK
           E                        AL
           F                        AM
           G                        AN
           H                        AU
           I                        Ad
           J                        Af
           K                        BC
           L                        BD
           M                        BH
           N                        BK
           O                        BL
           P                        BM
           Q                        BN
           R                        BU
           S                        Bd
           T                        Bf
           U                        CC
           V                        CD
           W                        CH
           X                        CK
           Y                        CL
           Z                        CM
           a                        CN
           b                        CU
           c                        Cd
           d                        Cf
           e                        DC
           f                        DD
           g                        DH
           h                        DK
           i                        DL
           j                        DM
           k                        DN
           l                        DU
           m                        Dd
           n                        Df
           o                        EC
           p                        ED
           q                        EH
           r                        EK
           s                        EL
           t                        EM
           u                        EN
           v                        EU
           w                        Ed
           x                        Ef
           y                        FC
           z                        FD
           0                        FH
           1                        FK
           2                        FL
           3                        FM
           4                        FN
           5                        FU
           6                        Fd
           7                        Ff
           8                        GC
           9                        GD

7mud-pdb-bundle2.pdb:
           A                        GH
           B                        GK
           C                        GL
           D                        GM
           E                        GN
           F                        GU
           G                        Gd
           H                        Gf
           I                        HC
           J                        HD
           K                        HH
           L                        HK
           M                        HL
           N                        HM
           O                        HN
           P                        HU
           Q                        Hd
           R                        Hf
           S                        IC
           T                        ID
           U                        IH
           V                        IK
           W                        IL
           X                        IM
           Y                        IN
           Z                        IU
           a                        Id
           b                        If
           c                        JC
           d                        JD
           e                        JH
           f                        JK
           g                        JL
           h                        JM
           i                        JN
           j                        JU
           k                        Jd
           l                        Jf
           m                        KC
           n                        KD
           o                        KH
           p                        KK
           q                        KL
           r                        KM
           s                        KN
           t                        KU
           u                        Kd
           v                        Kf
           w                        LC
           x                        LD
           y                        LH
           z                        LK
           0                        LL
           1                        LM
           2                        LN
           3                        LU
           4                        Ld
           5                        Lf
           6                        MC
           7                        MD
           8                        MH
           9                        MK

7mud-pdb-bundle3.pdb:
           A                        ML
           B                        MM
           C                        MN
           D                        MU
           E                        Md
           F                        Mf
