    New chain ID            Original chain ID

6awb-pdb-bundle1.pdb:
           A                         A
           B                        01
           C                        02
           D                        03
           E                        04
           F                        05
           G                         B
           H                         E
           I                         F
           J                         G
           K                         H
           L                         I
           M                         J
           N                         K
           O                         L
           P                         M
           Q                         N
           R                         O
           S                         P
           T                         Q
           U                         R
           V                         S
           W                         T
           X                         U
           Y                         V
           Z                         W
           a                         X
