    New chain ID            Original chain ID

6mtd-pdb-bundle1.pdb:
           5                         5
           7                         7
           8                         8
           A                         A
           B                         B
           C                         C
           D                         D
           E                         E
           F                         F
           G                         G

6mtd-pdb-bundle2.pdb:
           A                         H
           B                         I
           C                         J
           D                         L
           E                         M
           F                         N
           G                         O
           H                         P
           I                         Q
           J                         R
           K                         S
           L                         T
           M                         U
           N                         V
           O                         W
           P                         X
           Q                         Y
           R                         Z
           S                         a
           T                         b
           U                         c
           V                         d
           W                         e
           X                         f
           Y                         g
           Z                         h
           a                         i
           b                         j
           c                         k
           d                         l
           e                         m
           f                         n
           g                         o
           h                         p
           i                         r
           j                         s
           k                         t
           l                         u
           m                         v
           n                         w
           o                         9
           p                        AA
           q                        BB
           r                        CC
           s                        DD
           t                        EE
           u                        FF
           v                        GG
           w                        HH
           x                        II

6mtd-pdb-bundle3.pdb:
           A                        JJ
           B                        KK
           C                        LL
           D                        MM
           E                        NN
           F                        OO
           G                        PP
           H                        QQ
           I                        RR
           J                        SS
           K                        TT
           L                        UU
           M                        VV
           N                        WW
           O                        XX
           P                        YY
           Q                        ZZ
           R                        aa
           S                        bb
           T                        cc
           U                        dd
           V                        ee
           W                        ff
           X                        gg
