    New chain ID            Original chain ID

7mly-pdb-bundle1.pdb:
           J                         J
           G                         G
           K                         K
           F                         F
           M                         M
           L                         L
           I                         I
           H                         H
           D                         D
           A                         A
           B                         B
           C                         C
           E                         E
           T                         T
           Z                         Z
           f                         f
           l                         l
           r                         r
