    New chain ID            Original chain ID

9v7j-pdb-bundle1.pdb:
           A                         A
           B                         C
           C                         M
           D                         N
           E                         O
           F                         P
           G                         E
           H                         F
           I                         G
           J                         H
           K                         I
           L                         J
           M                         K
           N                         L
           O                         Q
           P                         R
           Q                         S
           R                         T
           S                         U
           T                         V
           U                         W
           V                         X
           W                         Y
           X                         Z
           Y                         a
           Z                         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                         1
           z                         2
           0                         3
           1                         4
           2                         5
           3                         6
           4                         7
           5                         8
           6                         9
           7                         0
           8                        AA
           9                        AB

9v7j-pdb-bundle2.pdb:
           A                        AC
           B                        AD
           C                        AE
           D                        AF
           E                        AG
           F                        AH
           G                        AI
           H                        AJ
           I                        AK
           J                        AL
           K                        AM
           L                        AN
           M                        AO
           N                        AP
           O                        AQ
           P                        AR
           Q                        AS
           R                        AT
           S                        AU
           T                        AV
           U                        AW
           V                        AX
           W                        AY
           X                        AZ
           Y                        Aa
           Z                        Ab
           a                        Ac
           b                        Ad
