    New chain ID            Original chain ID

8i9y-pdb-bundle1.pdb:
           A                        C1
           B                        C2
           C                        CA
           D                        CB
           E                        CC
           F                        CD
           G                        CE
           H                        CF
           I                        CG
           J                        CH
           K                        CI
           L                        CJ
           M                        CK
           N                        CL
           O                        CM
           P                        CN
           Q                        CO

8i9y-pdb-bundle2.pdb:
           A                        CP
           B                        CQ
           C                        CR
           D                        CS
           E                        CT
           F                        CU
           G                        CV
           H                        CX
           I                        CY
           J                        Cz
           K                        LB
           L                        LC
           M                        LE
           N                        LF
           O                        LG
           P                        LH
           Q                        LK
           R                        LL
           S                        LM
           T                        LN
           U                        LO
           V                        LP
           W                        LQ
           X                        LR
           Y                        LS
           Z                        LT
           a                        LU
           b                        LV
           c                        LX
           d                        LY
           e                        LZ
           f                        Lc
           g                        Ld
           h                        Le
           i                        Lf
           j                        Lg
           k                        Lh
           l                        Li
           m                        Lj
           n                        Lk
           o                        Ll
           p                        Lq
