    New chain ID            Original chain ID

9v2s-pdb-bundle1.pdb:
           A                         A
           B                         B
           C                         C
           D                         D
           E                         E
           F                         F
           G                         G
           H                         H
           I                         I
           J                         J
           K                         K
           L                         L
           M                         M
           N                         N
           O                         O
           P                         P
           Q                         Q
           R                         R
           S                         S
           T                         T
           U                         U
           V                         V
           W                         W
           X                         X
           Y                         Y
           Z                         Z
           a                         a
           b                         b
           c                         c
           d                         d
           e                         e
           f                         f
           g                         g
           h                         h
           i                         i
           j                         j
           k                         k
           l                         l
           m                         m
           n                         n
           o                         o
           p                         p
           q                         q
           r                         r
           s                         s
           t                         t
           u                         u
           v                         v
           w                         w
           x                         x
           y                         y
           z                         z
           1                         1
           2                         2
           3                         3
           4                         4

9v2s-pdb-bundle2.pdb:
           A                         5
           B                         6
           C                         7
           D                         8
           E                         9
           F                         0
           G                        AA
           H                        AB
           I                        AC
           J                        AD
           K                        AE
           L                        AF
           M                        AG
           N                        AH
           O                        AI
           P                        AJ
           Q                        AK
           R                        AL
           S                        AM
           T                        AN
           U                        AO
           V                        AP
           W                        AQ
           X                        AR
           Y                        AS
           Z                        AT
           a                        AU
           b                        AV
           c                        AW
           d                        AX
           e                        AY
           f                        AZ
           g                        Aa
           h                        Ab
           i                        Ac
           j                        Ad
