    New chain ID            Original chain ID

4ctg-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
           a                        A0
           b                        A1
           c                        A2
           d                        A3
           e                        A4
           f                        A5
           g                        A6
           h                        A7
           i                        A8
           j                        A9
           k                        Aa
           l                        Ab
           m                        Ac
           n                        Ad
           o                        Ae
           p                        Af
           q                        Ag
           r                        Ah
           s                        Ai
           t                        Aj
           u                        Ak
           v                        Al
           w                        Am
           x                        An
           y                        Ao
           z                        BA

4ctg-pdb-bundle2.pdb:
           A                        BB
           B                        BC
           C                        BD
           D                        BE
           E                        BF
           F                        BG
           G                        BH
           H                        BI
           I                        BJ
           J                        BK
           K                        BL
           L                        BM
           M                        BN
           N                        BR
           O                        BO
           P                        BS
           Q                        BP
           R                        BQ
           S                        BT
           T                        BU
           U                        BV
           V                        BW
           W                        BX
           X                        BY
           Y                        BZ
           Z                        B0
           a                        B1
           b                        B2
           c                        B3
           d                        B4
           e                        B5
           f                        B6
           g                        B7
           h                        B8
           i                        B9
           j                        Ba
           k                        Bb
           l                        Bc
           m                        Bd
           n                        Be
           o                        Bf
           p                        Bg
           q                        Bh
           r                        Bi
           s                        Bj
           t                        Bk
           u                        Bl
           v                        Bm
           w                        Bn
           x                        Bo
           y                        Bp
           z                        Bq
           0                        Br
           1                        Bs
           2                        Bt
           3                        Bu
           4                        Bv
           5                        Bw
           6                        Bx
           7                        CA
           8                        CB
           9                        CC

4ctg-pdb-bundle3.pdb:
           A                        CD
           B                        CE
           C                        CF
           D                        CG
           E                        CH
           F                        CI
           G                        CJ
           H                        CK
           I                        CL
           J                        CM
           K                        CN
           L                        CO
           M                        CP
           N                        CQ
           O                        CR
           P                        CS
           Q                        CT
           R                        CU
           S                        CV
           T                        CW
           U                        CX
           V                        CY
           W                        CZ
           X                        C0
           Y                        C1
           Z                        C2
           a                        C3
           b                        C4
           c                        C5
           d                        C6
           e                        C7
           f                        C8
           g                        C9
           h                        Cc
           i                        Cd
           j                        Ce
           k                        Cf
           l                        Cg
           m                        Ch
           n                        Ci
           o                        Cj
           p                        Ck
           q                        Cl
           r                        Cm
           s                        Cn
           t                        Co
           u                        Cp
           v                        Cq
           w                        Cr
           x                        Cs
           y                        Ct
           z                        Cu
           0                        Cv
           1                        Cw
           2                        Cx
           3                        DA
           4                        DB
           5                        DC

4ctg-pdb-bundle4.pdb:
           A                        DD
           B                        DE
           C                        DF
           D                        DG
           E                        DH
           F                        DI
           G                        DJ
           H                        DK
