    New chain ID            Original chain ID

7o0x-pdb-bundle1.pdb:
           A                        AA
           B                        AB
           C                        AC
           D                        AD
           E                        AE
           F                        AF
           G                        AG
           H                        AH
           I                        AI
           J                        AJ
           K                        AK
           L                        AL
           M                        AM
           N                        AN
           O                        AO
           P                        AP
           Q                        AQ
           R                        AR
           S                        AS
           T                        AT
           U                        AU
           V                        AV
           W                        AW
           X                        AX
           Y                        BA
           Z                        BB
           a                        BC
           b                        BD
           c                        BE
           d                        BF
           e                        BG
           f                        BH
           g                        BI
           h                        BJ
           i                        BK
           j                        BL
           k                        BM
           l                        BN
           m                        BO
           n                        BP
           o                        BQ
           p                        BR
           q                        BS
           r                        BT
           s                        BU
           t                        BV
           u                        BW
           v                        BX
           w                         C
           x                        C1
           y                        C2
           z                        H1
           0                        H2
           1                         L
           2                         M
           3                        aa
           4                        ab
           5                        ac
           6                        ad
           7                        ae
           8                        af
           9                        ag

7o0x-pdb-bundle2.pdb:
           A                        ah
           B                        ai
           C                        aj
           D                        ak
           E                        al
           F                        am
           G                        an
           H                        ao
           I                        ap
           J                        ba
           K                        bb
           L                        bc
           M                        bd
           N                        be
           O                        bf
           P                        bg
           Q                        bh
           R                        bi
           S                        bj
           T                        bk
           U                        bl
           V                        bm
           W                        bn
           X                        bo
           Y                        bp
           Z                        MG
           a                        CG
