    New chain ID            Original chain ID

3j9r-pdb-bundle1.pdb:
           A                         A
           B                         B
           F                         F
           E                         E
           D                         D
           C                         C
           0                         0
           1                         1
           5                         5
           4                         4
           3                         3
           2                         2
           G                         G
           H                         H
           L                         L
           K                         K
           J                         J
           I                         I
           M                         M
           N                         N
           R                         R
           Q                         Q
           P                         P
           O                         O
           a                         a
           b                         b
           f                         f
           e                         e
           d                         d
           c                         c
           g                         g
           h                         h
           l                         l
           k                         k

3j9r-pdb-bundle2.pdb:
           j                         j
           i                         i
