    New chain ID            Original chain ID

6by1-pdb-bundle1.pdb:
           A                        AA
           B                        CA
           C                        CB

6by1-pdb-bundle2.pdb:
           A                        AV
           B                        AY
           C                        CC
           D                        CD
           E                        CE
           F                        CF
           G                        CG
           H                        CH
           I                        C5
           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                        CW
           Y                        CX
           Z                        CY
           a                        CZ
           b                        C0
           c                        C1
           d                        C2
           e                        C3
           f                        C4
           g                        C6
           h                        AX
           i                        AW
           j                        AB
           k                        AC
           l                        AD
           m                        AE
           n                        AF
           o                        AG
           p                        AH
           q                        AI
           r                        AJ
           s                        AK
           t                        AL
           u                        AM
           v                        AN
           w                        AO
           x                        AP
           y                        AQ
           z                        AR
           0                        AS
           1                        AT
           2                        BA

6by1-pdb-bundle3.pdb:
           A                        DA
           B                        DB
           C                        BV
           D                        DC
           E                        DD
           F                        DE
           G                        DF
           H                        DG
           I                        DH
           J                        DI
           K                        DJ
           L                        DK
           M                        DL
           N                        DM
           O                        DN
           P                        DO
           Q                        DP
           R                        DQ
           S                        DR
           T                        DS
           U                        DT
           V                        DU
           W                        DV
           X                        DW
           Y                        DX
           Z                        DY
           a                        DZ
           b                        D0
           c                        D1
           d                        D2
           e                        D3
           f                        D4
           g                        D6
           h                        BX
           i                        BW
           j                        BB
           k                        BC

6by1-pdb-bundle4.pdb:
           A                        BD
           B                        BE
           C                        BF
           D                        BG
           E                        BH
           F                        BI
           G                        BJ
           H                        BK
           I                        BL
           J                        BM
           K                        BN
           L                        BO
           M                        BP
           N                        BQ
           O                        BR
           P                        BS
           Q                        BT
