    New chain ID            Original chain ID

9hq7-pdb-bundle1.pdb:
           A                         A
           B                         B
           C                         D
           D                         E
           E                         F
           F                         G
           G                         H
           H                         I
           I                         K
           J                         L
           K                         M
           L                         N
           M                         O
           N                         P
           O                         Q
           P                         R
           Q                         S
           R                         T
           S                         U
           T                         V
           U                         W
           V                         X
           W                        BA
           X                        CA
           Y                        DA
           Z                        EA
           a                        FA
           b                        GA
           c                        HA
           d                        IA
           e                        JA
           f                        KA
           g                        LA
           h                        MA
           i                        NA
           j                        OA
           k                        PA
           l                        QA
           m                        SA
           n                        TA
           o                        UA
           p                        VA
           q                        WA
           r                        XA
           s                        YA
           t                        ZA
           u                        AB
           v                        CB
           w                        DB

9hq7-pdb-bundle2.pdb:
           A                        FB
           B                        GB
           C                        HB
