    New chain ID            Original chain ID

9o5l-pdb-bundle1.pdb:
           A                         a
           B                        ab
           C                         A
           D                        AB
           E                         b
           F                        bb
           G                         c
           H                        cb
           I                         d
           J                        db
           K                         e
           L                        eb
           M                         f
           N                        fb
           O                         g
           P                        gb
           Q                         h
           R                        hb
           S                         i
           T                        ib
           U                         j
           V                        jb
           W                         B
           X                        BB
           Y                         C
           Z                        CB
           a                         D
           b                        DB
           c                         E
           d                        EB
           e                         F
           f                        FB
           g                         G
           h                        GB
           i                         H
           j                        HB
           k                         I
           l                        IB
           m                         J
           n                        JB
           o                         K
           p                        KB
           q                         L
           r                        LB
           s                         M
           t                        MB
           u                         N
           v                        NB
           w                         O
           x                        OB
           y                         P
           z                        PB
           0                         Q
           1                        QB
           2                         R
           3                        RB
           4                         S
           5                        SB
           6                         T
           7                        TB
