    New chain ID            Original chain ID

6bok-pdb-bundle1.pdb:
           A                         A
           B                         B
           C                         C
           D                         D

6bok-pdb-bundle2.pdb:
           A                         E
           B                         F
           C                         G
           D                         H
           E                         I
           F                         J
           G                         K
           H                         L
           I                         M
           J                         N
           K                         O
           L                         P
           M                         Q
           N                         R
           O                         S
           P                         T
           Q                         U
           R                         V
           S                         W
           T                         X
           U                         Y
           V                         Z
           W                        AA
           X                        BA
           Y                        CA
           Z                        DA
           a                        EA
           b                        FA
           c                        GA
           d                        HA
           e                        IA
           f                        JA
           g                        KA
           h                        LA
           i                        MA
           j                        NA
           k                        OA
           l                        PA
           m                        QA
           n                        RA
           o                        SA
           p                        TA
           q                        UA
           r                        VA
           s                        WA
           t                        XA
           u                        YA
           v                        ZA
           w                        AB
           x                        BB
           y                        CB
           z                        DB

6bok-pdb-bundle3.pdb:
           A                        EB
           B                        FB
           C                        GB
           D                        HB
           E                        IB
           F                        JB
           G                        KB
           H                        LB
           I                        MB
           J                        NB
           K                        OB
           L                        PB
           M                        QB
           N                        RB
           O                        SB
           P                        TB
           Q                        UB
           R                        VB
           S                        WB
           T                        XB
           U                        YB
           V                        ZB
           W                        AC
           X                        BC
           Y                        CC
           Z                        DC
           a                        EC
           b                        FC
           c                        GC
           d                        HC
           e                        IC
           f                        JC
           g                        KC
           h                        LC
           i                        MC
           j                        NC

6bok-pdb-bundle4.pdb:
           A                        OC
           B                        PC
           C                        QC
           D                        RC
           E                        SC
           F                        TC
           G                        UC
           H                        VC
           I                        WC
           J                        XC
           K                        YC
           L                        ZC
           M                        AD
           N                        BD
           O                        CD
           P                        DD
           Q                        ED
           R                        FD
           S                        GD
           T                        HD
