    New chain ID            Original chain ID

7lqe-pdb-bundle1.pdb:
           A                         A
           B                         J
           C                         K
           D                         L
           E                         B
           F                         M
           G                         N
           H                         O
           I                         C
           J                         P
           K                         Q
           L                         R
           M                         D
           N                         S
           O                         T
           P                         U
           Q                         E
           R                         V
           S                         W
           T                         X
           U                         F
           V                         Y
           W                         Z
           X                         j
           Y                         G
           Z                         k
           a                         l
           b                         m
           c                         H
           d                         n
           e                         o
           f                         p
           g                         I
           h                         q
           i                         r
           j                         s
           k                         a
           l                         t
           m                         u
           n                         v
           o                         b
           p                         w
           q                         x
           r                         y
           s                         c
           t                         z
           u                         0
           v                         1
           w                         d
           x                         2
           y                         3
           z                         4
           0                         e
           1                         5
           2                         6
           3                         7
           4                         f
           5                         8
           6                         9
           7                        AA
           8                         g
           9                        BA

7lqe-pdb-bundle2.pdb:
           A                        CA
           B                        DA
           C                         h
           D                        EA
           E                        FA
           F                        GA
           G                         i
           H                        HA
           I                        IA
           J                        JA
