    New chain ID            Original chain ID

6i7o-pdb-bundle1.pdb:
           A                        BQ
           B                        BR
           C                        BS
           D                        AW
           E                        BA
           F                        BE
           G                        BI
           H                        BM
           I                        BO
           J                        AA
           K                        AD
           L                        BD
           M                        AG
           N                        AJ
           O                        AM
           P                        AQ
           Q                        AU

6i7o-pdb-bundle2.pdb:
           A                         2
           B                         P
           C                         Q
           D                         R
           E                         A
           F                         S
           G                         B
           H                         T
           I                         U
           J                         V
           K                         W
           L                         C
           M                         X
           N                         D
           O                         Y
           P                         Z
           Q                         E
           R                         F
           S                         G
           T                         H
           U                         I
           V                         J
           W                         a
           X                         b
           Y                         c
           Z                         d
           a                         K
           b                         e
           c                         f
           d                         L
           e                         M
           f                         g
           g                         N
           h                         O
           i                        AX
           j                        BB
           k                        BF
           l                        BH
           m                        BJ
           n                        BL
           o                        AB
           p                        AE
           q                        AH
           r                        AK
           s                        AN
           t                        AR
           u                        AV
           v                        AY
           w                        BC
           x                        BG
           y                        BK
           z                        BN
           0                        BP
           1                        AC
           2                        AF
           3                        AI
           4                        AL
           5                        AO
           6                        AS
           7                        AP
           8                        AT

6i7o-pdb-bundle3.pdb:
           A                        BU
           B                        2b
           C                        Pb
           D                        Qb
           E                        Rb
           F                        Ab
           G                        Sb
           H                        Bb
           I                        Tb
           J                        Ub
           K                        Vb
           L                        Wb
           M                        Cb
           N                        Xb
           O                        Db
           P                        Yb
           Q                        Zb
           R                        Eb
           S                        Fb
           T                        Gb
           U                        Hb
           V                        Ib
           W                        Jb
           X                        ab
           Y                        bb
           Z                        cb
           a                        db
           b                        Kb
           c                        eb
           d                        fb
           e                        Lb
           f                        Mb
           g                        gb
           h                        Nb
           i                        Ob

6i7o-pdb-bundle4.pdb:
           A                        YQ
           B                        YR
           C                        YS
           D                        XW
           E                        YA
           F                        YE
           G                        YI
           H                        YM
           I                        YO
           J                        XA
           K                        XD
           L                        YD
           M                        XG
           N                        XJ
           O                        XM
           P                        XQ
           Q                        XU
           R                        XX

6i7o-pdb-bundle5.pdb:
           A                        YB
           B                        YF
           C                        YH
           D                        YJ
           E                        YL
           F                        XB
           G                        XE
           H                        XH
           I                        XK
           J                        XN
           K                        XR
           L                        XV
           M                        XY
           N                        YC
           O                        YG
           P                        YK
           Q                        YN
           R                        YP
           S                        XC
           T                        XF
           U                        XI
           V                        XL
           W                        XO
           X                        XS
           Y                        XP
           Z                        XT
           a                        YU
           b                         n
           c                         m
           d                        nb
           e                        mb
           f                         l
