    New chain ID            Original chain ID

8jdl-pdb-bundle1.pdb:
           A                         A
           B                         B
           D                         D
           E                         E
           F                         F
           G                         G
           H                         H
           I                         I
           J                         J
           K                         K
           L                         L
           M                         M

8jdl-pdb-bundle2.pdb:
           A                         N
           B                         O
           C                         P
           D                         Q
           E                         R
           F                         S
           G                         T
           H                         U
           I                         V
           J                         W
           K                         X
           L                         Y
           M                         Z
           N                         a
           O                         b
           P                         c
           Q                         d
           R                         e
           S                         f
           T                         g
           U                         h
           V                         i
           W                         j
           X                         k
           Y                         l
           Z                         m
           a                         n
           b                         o
           c                         p
           d                         q
           e                         r
           f                         s
           g                         t
           h                         u
           i                         v
           j                         w
           k                         x
           l                         y
           m                         z
           n                         0
           o                         1
           p                         2
           q                         3
           r                         4
           s                         5
           t                         6
           u                         7
           v                         8
           w                         9
           x                        AA
           y                        AB
           z                        AC
           0                        AD
           1                        AE
           2                        AF
           3                        AG
           4                        AH

8jdl-pdb-bundle3.pdb:
           A                        AI
           B                        AJ
           C                        AK
           D                        AL
           E                        AM
           F                        AN
           G                        AO
           H                        AP
           I                        AQ
           J                        AR
