    New chain ID            Original chain ID

6th6-pdb-bundle1.pdb:
           A                        Aa
           B                        Ab
           C                        Ac
           D                        Ad
           E                        Ae
           F                        Af
           G                        Ag
           H                        Ah
           I                        Ai
           J                        Aj
           K                        Ak
           L                        Al
           M                        Am
           N                        An
           O                        Ao
           P                        Ap
           Q                        Aq
           R                        Ar
           S                        As
           T                        At
           U                        Au
           V                        Av
           W                        Aw
           X                        Ax
           Y                        Ay
           Z                        Az

6th6-pdb-bundle2.pdb:
           A                        BA
           B                        BB
           C                        BC
           D                        BD
           E                        BE
           F                        BF
           G                        BG
           H                        BH
           I                        BI
           J                        BJ
           K                        BK
           L                        BL
           M                        BM
           N                        BN
           O                        BO
           P                        BP
           Q                        BQ
           R                        BR
           S                        BS
           T                        BT
           U                        BU
           V                        BV
           W                        BW
           X                        BX
           Y                        BY
           Z                        BZ
           a                        Ba
           b                        Bb
           c                        Bc
           d                        Bd
           e                        Be

6th6-pdb-bundle3.pdb:
           A                        Bg
           B                        Bh
           C                        Bi
           D                        Bj
           E                        Bk
           F                        Bl
