    New chain ID            Original chain ID

7m2t-pdb-bundle1.pdb:
           A                         A
           B                         B
           C                         C
           D                         D
           E                         E
           F                         F
           G                         G
           H                         H
           I                         I
           J                         J
           K                         K
           L                         L
           M                         M
           N                         N
           O                         O
           P                         P
           Q                         Q
           R                         R
           S                         S
           T                         T
           U                         U
           V                         V
           W                         W
           X                         X
           Y                         Y
           Z                         Z
           a                         a
           b                         b
           c                         c
           d                         d
           e                         e
           f                         f
           g                         g
           h                         h
           i                         i
           j                         j
           k                         k
           l                         l
           m                         m
           n                         n
           o                         o
           p                         p
           q                         q
           r                         r
           s                         s
           t                         t
           u                         u
           v                         v
           w                         w
           x                         x
           y                         y
           z                         z
           0                         1
           1                         2
           2                         3
           3                         4
           4                         5
           5                         6
           6                         7
           7                         8
           8                        BB
           9                        CC

7m2t-pdb-bundle2.pdb:
           A                        DD
           B                        EE
           C                        FF
           D                        GG
           E                        HH
           F                        II
           G                        JJ
           H                        KK
           I                        LL
           J                        MM
           K                        NN
           L                        OO
           M                        PP
           N                        QQ
           O                        RR
           P                        SS
           Q                        TT
           R                        UU
           S                        VV
           T                        WW
           U                        YY
           V                        ZZ
           W                        bb
           X                        cc
           Y                        dd
           Z                        ee
           a                        ff
           b                        gg
           c                        hh
           d                        ii
           e                        jj
           f                        kk
           g                        ll
           h                        mm
           i                        nn
           j                        oo
           k                        pp
           l                        qq
           m                        rr
           n                        ss
           o                        tt
           p                        uu
           q                        vv
           r                        ww
           s                        xx
           t                        yy
           u                        zz
