    New chain ID            Original chain ID

8ogj-pdb-bundle1.pdb:
           A                         1
           B                         3
           C                         4
           D                        10
           E                         j
           F                         k
           G                         l
           H                         m
           I                         n
           J                         o
           K                         p
           L                         q
           M                         r
           N                         s
           O                         t
           P                         u
           Q                         v
           R                         w

8ogj-pdb-bundle2.pdb:
           A                         x
           B                         y
           C                         z
           D                         0
           E                         2
           F                         5
           G                         6
           H                         7
           I                         8
           J                         9
           K                        AA
           L                        AB
           M                        AC
           N                        AD
           O                        AE
           P                        AF
           Q                        AG
           R                        AH
           S                        AI
           T                        AJ
           U                        AK
           V                        AL
           W                        AM
           X                        AN
           Y                        AO
           Z                        AP
           a                        AQ
           b                         A
           c                         B
           d                         C
           e                         D
           f                         E
           g                         F
           h                         G
           i                         H
           j                         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
           y                         X
           z                         Y
           0                         Z
           1                         a
           2                         b
           3                         c
           4                         d
           5                         e
           6                         f
           7                         g
           8                         h
