    New chain ID            Original chain ID

9j9i-pdb-bundle1.pdb:
           A                         A
           B                        AA

9j9i-pdb-bundle2.pdb:
           A                         j
           B                        AH
           C                         B
           D                        AB
           E                         k
           F                         C
           G                        AC
           H                         l
           I                         D
           J                         0
           K                         n
           L                         E
           M                         1
           N                         o
           O                         F
           P                         2
           Q                         p
           R                         G
           S                         3
           T                         q
           U                         H
           V                         4
           W                         s
           X                         I
           Y                         5
           Z                         t
           a                         J
           b                         6
           c                         u
           d                         K
           e                         7
           f                         y
           g                         L
           h                         8
           i                         z
           j                         M
           k                         9
           l                        AD
           m                         N
           n                         a
           o                        AE
           p                         O
           q                         b
           r                        AI
           s                         P
           t                         c
           u                        AQ

9j9i-pdb-bundle3.pdb:
           A                         Q
           B                         d
           C                        AK
           D                         R
           E                         e
           F                        AN
           G                         S
           H                         f
           I                        AP
           J                         T
           K                         g
           L                         m
           M                         U
           N                         h
           O                         r
           P                         V
           Q                         i
           R                         v
           S                         W
           T                        AJ
           U                         w
           V                         X
           W                        AL
           X                         x
           Y                         Y
           Z                        AM
           a                        AF
           b                         Z
           c                        AO
           d                        AG
