    New chain ID            Original chain ID

9ug9-pdb-bundle1.pdb:
           u                         u
           d                         d
           m                         m
           R                         R
           n                         n
           E                         E
           B                         B
           e                         e
           o                         o
           S                         S
           D                         D
           F                         F
           p                         p
           U                         U
           C                         C
           G                         G
           q                         q
           A                         A
           r                         r
           V                         V
           s                         s
           T                         T
           v                         v
           W                         W
           t                         t
           H                         H
           f                         f
           X                         X
           g                         g
           I                         I
           h                         h
           Y                         Y
           M                         M
           J                         J
           i                         i
           Z                         Z
           N                         N
           K                         K
           j                         j
           a                         a
           O                         O
           L                         L
           P                         P
           b                         b
           Q                         Q
           k                         k

9ug9-pdb-bundle2.pdb:
           c                         c
           l                         l
