    New chain ID            Original chain ID

8b3q-pdb-bundle1.pdb:
           A                       AAA
           B                       BBB
           C                       CCC
           D                       DDD
           E                       EEE
           F                       AaA
           G                       BaB
           H                       CaC
           I                       DaD
           J                       EaE
           K                       AbA
           L                       BbB
           M                       CbC
           N                       DbD
           O                       EbE
           P                       AcA
           Q                       BcB
           R                       CcC
           S                       DcD
           T                       EcE
           U                       AdA
           V                       BdB
           W                       CdC
           X                       DdD
           Y                       EdE
           Z                       AeA
           a                       BeB
           b                       CeC
           c                       DeD
           d                       EeE
           e                       AfA
           f                       BfB
           g                       CfC
           h                       DfD
           i                       EfE
           j                       AgA
           k                       BgB
           l                       CgC
           m                       DgD
           n                       EgE
           o                       AhA
           p                       BhB
           q                       ChC
           r                       DhD
           s                       EhE
           t                       AiA
           u                       BiB
           v                       CiC
           w                       DiD
           x                       EiE
           y                       AjA
           z                       BjB
           0                       CjC
           1                       DjD
           2                       EjE
           3                       AkA
           4                       BkB
           5                       CkC
           6                       DkD
           7                       EkE
           8                       AlA
           9                       BlB

8b3q-pdb-bundle2.pdb:
           A                       ClC
           B                       DlD
           C                       ElE
           D                       AmA
           E                       BmB
           F                       CmC
           G                       DmD
           H                       EmE
           I                       AnA
           J                       BnB
           K                       CnC
           L                       DnD
           M                       EnE
