    New chain ID            Original chain ID

8fjl-pdb-bundle1.pdb:
           A                         A
           B                         B
           C                         C
           D                         D
           E                         E
           F                         F
           G                         G
           H                         H
           I                         I
           J                         J
           K                         K

8fjl-pdb-bundle2.pdb:
           A                         L
           B                         M
           C                         N
           D                        a5
           E                        b5
           F                        b6
           G                        a6
           H                        a1
           I                        b1
           J                        a3
           K                         V
           L                         W
           M                         X
           N                         Y
           O                         Z
           P                         a
           Q                         b
           R                         c
           S                         d
           T                         e
           U                         f
           V                         g
           W                         h
           X                         i
           Y                        b3
           Z                         k
           a                         l
           b                         m

8fjl-pdb-bundle3.pdb:
           A                         n
           B                        a2
           C                        b2
