    New chain ID            Original chain ID

5it7-pdb-bundle1.pdb:
           A                         5
           B                         7
           C                         8
           D                        AA
           E                        BB
           F                        CC
           G                        DD
           H                        EE
           I                        FF
           J                        GG
           K                        HH
           L                        II
           M                        JJ
           N                        LL
           O                        MM
           P                        NN

5it7-pdb-bundle2.pdb:
           A                        OO
           B                        PP
           C                        QQ
           D                        RR
           E                        SS
           F                        TT
           G                        UU
           H                        VV
           I                        WW
           J                        XX
           K                        YY
           L                        ZZ
           M                        aa
           N                        bb
           O                        cc
           P                        dd
           Q                        ee
           R                        ff
           S                        gg
           T                        hh
           U                        ii
           V                        jj
           W                        kk
           X                        ll
           Y                        mm
           Z                        nn
           a                        oo
           b                        pp
           c                        qq
           d                        rr
           e                        KK
           f                         A
           g                         B
           h                         C
           i                         D
           j                         E
           k                         F
           l                         G
           m                         H
           n                         I
           o                         J
           p                         K
           q                         L
           r                         M
           s                         N
           t                         O
           u                         P
           v                         Q
           w                         R
           x                         S
           y                         T
           z                         U
           0                         V
           1                         W
           2                         X
           3                         Y
           4                         Z
           5                         a
           6                         b
           7                         c
           8                         d
           9                         e

5it7-pdb-bundle3.pdb:
           f                         f
           g                         g
           2                         2
           4                         4
           1                         1
