    New chain ID            Original chain ID

8i9w-pdb-bundle1.pdb:
           A                        C1
           B                        C2
           C                        CA
           D                        CB
           E                        CC
           F                        CE
           G                        CF
           H                        CG
           I                        CH
           J                        CI
           K                        CJ
           L                        CK
           M                        CL
           N                        CM
           O                        CN
           P                        CO
           Q                        CP
           R                        CQ
           S                        CR
           T                        CS
           U                        CT
           V                        CU
           W                        CV
           X                        CX
           Y                        CY

8i9w-pdb-bundle2.pdb:
           A                        Cb
           B                        Cz
           C                        LB
           D                        LC
           E                        LE
           F                        LF
           G                        LG
           H                        LH
           I                        LK
           J                        LL
           K                        LM
           L                        LN
           M                        LO
           N                        LP
           O                        LQ
           P                        LS
           Q                        LT
           R                        LV
           S                        LX
           T                        LY
           U                        Ld
           V                        Le
           W                        Lf
           X                        Lh
           Y                        Li
           Z                        Lj
           a                        Lq
