    New chain ID            Original chain ID

8wkq-pdb-bundle1.pdb:
           A                        UI
           B                        UJ
           C                        UK
           D                        UL
           E                        UM
           F                        UN
           G                        UO
           H                        UP
           I                        WA
           J                        WB
           K                        WC
           L                        WD
           M                        WE
           N                        WF
           O                        WG
           P                        WH
           Q                        WI
           R                        WJ
           S                        WK
           T                        WL
           U                        WM
           V                        WN
           W                        WO
           X                        WP
           Y                        WQ
           Z                        WR
           a                        WS
           b                        WT
           c                        WU
           d                        WV
           e                        WW
           f                         A
           g                         B
           h                         C
           i                         D
           j                         E
           k                         F
           l                         G
           m                         H
           n                         I
           o                         J
           p                         K
           q                         L
           r                         M
           s                         N
           t                         O
           u                         P
           v                         Q
           w                         R
           x                         S
           y                         T
           z                         U
           0                         V
           1                         W
           2                         X
           3                         Y
           4                         Z
           5                         a
           6                         b
           7                         c
           8                         d
           9                         e

8wkq-pdb-bundle2.pdb:
           A                         f
           B                         g
           C                         h
           D                         i
           E                         j
           F                         k
           G                         l
           H                         t
           I                         u
           J                         v
           K                         w
           L                         x
           M                         y
           N                         z
           O                         1
           P                         2
           Q                         3
           R                         4
           S                         5
           T                         6
           U                         7
           V                         8
           W                         9
           X                         0
           Y                        AA
           Z                        AB
           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
