    New chain ID            Original chain ID

9rvu-pdb-bundle1.pdb:
           A                        AA
           B                        AD
           C                        AE
           D                        AF
           E                        AG
           F                        AH
           G                        AI
           H                        AJ
           I                        AK
           J                        AL
           K                        AM
           L                        AN
           M                        AO
           N                        AP
           O                        AQ
           P                        AR
           Q                        AS
           R                        AT
           S                        AU
           T                        AV
           U                        AW
           V                        Aa
           W                        Ab
           X                        Ac
           Y                        Ad
           Z                        Ae
           a                        Af
           b                        Ag
           c                        Ah
           d                        Ai
           e                        Aj
           f                        Ak
           g                        Am
           h                        B0
           i                        B1

9rvu-pdb-bundle2.pdb:
           A                        B2
           B                        B3
           C                        B4
           D                        BN
           E                        BO
           F                        BP
           G                        BQ
           H                        BR
           I                        BS
           J                        BT
           K                        BV
           L                        BW
           M                        BX
           N                        BY
           O                        BZ
           P                        Ba

9rvu-pdb-bundle3.pdb:
           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                        By
           X                        H1
           Y                        HE
           Z                        HL
           a                        HS
           b                        HI
           c                        BA
           d                        BU
           e                        Bb
           f                         A
