    New chain ID            Original chain ID

13mf-pdb-bundle1.pdb:
           A                         0
           B                         1
           C                         2
           D                         3
           E                         4
           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                        AM
           W                        AN
           X                        AO
           Y                        AP
           Z                        AQ
           a                        AR
           b                        AS
           c                        AT
           d                         K
           e                         L
           f                         M
           g                         N
           h                         O
           i                         P
           j                         Q
           k                         R
           l                         S
           m                         T
           n                         U
           o                         W
           p                         X
           q                         Y
           r                         Z
           s                         a
           t                         b
           u                         c
           v                         d
           w                         e
           x                         f
           y                         g
           z                         h
           0                         i
           1                         j
           2                         k
           3                         l
           4                         m
           5                         n
           6                         o
           7                         p
           8                         q
           9                         r

13mf-pdb-bundle2.pdb:
           s                         s
           t                         t
           u                         u
           v                         v
           w                         w
           x                         x
           y                         y
           z                         z
