    New chain ID            Original chain ID

7vy2-pdb-bundle1.pdb:
           A                         L
           B                         M
           C                         H
           D                         A
           E                         B
           F                         D
           G                         E
           H                         F
           I                         G
           J                         I
           K                         J
           L                         K
           M                         N
           N                         O
           O                         P
           P                         Q
           Q                         R
           R                         S
           S                         T
           T                         V
           U                         W
           V                         Y
           W                         Z
           X                         1
           Y                         2
           Z                         3
           a                         4
           b                         5
           c                         6
           d                         7
           e                         8
           f                         X
           g                         U
           h                         l
           i                         m
           j                         h
           k                         a
           l                         b
           m                         d
           n                         e
           o                         f
           p                         g
           q                         i
           r                         j
           s                         k
           t                         n
           u                         o
           v                         p
           w                         q
           x                         r
           y                         s
           z                         t
           0                         v
           1                         w
           2                         y
           3                         z
           4                        01
           5                        02
           6                        03
           7                        04
           8                        05
           9                        06

7vy2-pdb-bundle2.pdb:
           A                        07
           B                        08
           C                         x
           D                         u
