    New chain ID            Original chain ID

7ckb-pdb-bundle1.pdb:
           A                        AA
           B                        BA
           C                        CA
           D                        AB
           E                        BB
           F                        CB
           G                        AC
           H                        BC
           I                        CC
           J                        AD
           K                        BD
           L                        CD
           M                        AE
           N                        BE
           O                        CE
           P                        AF
           Q                        BF
           R                        CF
           S                        AG
           T                        BG
           U                        CG
           V                        AH
           W                        BH
           X                        CH
           Y                        AI
           Z                        BI
           a                        CI
           b                        AJ
           c                        BJ
           d                        CJ
           e                        AK
           f                        BK
           g                        CK
           h                        AL
           i                        BL
           j                        CL
           k                        AM
           l                        BM
           m                        CM
           n                        AN
           o                        BN
           p                        CN
           q                        AO
           r                        BO
           s                        CO
           t                        AP
           u                        BP
           v                        CP
           w                        AQ
           x                        BQ
           y                        CQ
           z                        AR
           0                        BR
           1                        CR
           2                        AS
           3                        BS
           4                        CS
           5                        AT
           6                        BT
           7                        CT
           8                        AV
           9                        BV

7ckb-pdb-bundle2.pdb:
           A                        CV
           B                        AW
           C                        BW
           D                        CW
           E                        AX
           F                        BX
           G                        CX
           H                        AY
           I                        BY
           J                        CY
           K                        AZ
           L                        BZ
           M                        CZ
           N                        Aa
           O                        Ba
           P                        Ca
           Q                        Ab
           R                        Bb
           S                        Cb
           T                        Ac
           U                        Bc
           V                        Cc
           W                        Ad
           X                        Bd
           Y                        Cd
           Z                        Ae
           a                        Be
           b                        Ce
           c                        Af
           d                        Bf
           e                        Cf
           f                        Ag
           g                        Bg
           h                        Cg
           i                        Ah
           j                        Bh
           k                        Ch
           l                        Ai
           m                        Bi
           n                        Ci
           o                        Aj
           p                        Bj
           q                        Cj
           r                        Ak
           s                        Bk
           t                        Ck
           u                        Al
           v                        Bl
           w                        Cl
           x                        Am
           y                        Bm
           z                        Cm
           0                        An
           1                        Bn
           2                        Cn
           3                        Ao
           4                        Bo
           5                        Co
           6                        Ap
           7                        Bp
           8                        Cp
           9                        Aq

7ckb-pdb-bundle3.pdb:
           A                        Bq
           B                        Cq
           C                        Ar
           D                        Br
           E                        Cr
           F                        As
           G                        Bs
           H                        Cs
           I                        At
           J                        Bt
           K                        Ct
           L                        Av
           M                        Bv
           N                        Cv
           O                        Aw
           P                        Bw
           Q                        Cw
           R                        Ax
           S                        Bx
           T                        Cx
           U                        Ay
           V                        By
           W                        Cy
           X                        Az
           Y                        Bz
           Z                        Cz
           a                        A0
           b                        B0
           c                        C0
           d                        A1
           e                        B1
           f                        C1
           g                        A2
           h                        B2
           i                        C2
           j                        A3
           k                        B3
           l                        C3
           m                        A4
           n                        B4
           o                        C4
           p                        A5
           q                        B5
           r                        C5
           s                        A6
           t                        B6
           u                        C6
           v                        A7
           w                        B7
           x                        C7
           y                        A8
           z                        B8
           0                        C8
           1                        A9
           2                        B9
           3                        C9
