    New chain ID            Original chain ID

8wki-pdb-bundle1.pdb:
           A                        ZF
           B                        ZG
           C                        ZH
           D                        ZI
           E                        ZJ
           F                        ZK
           G                        ZL
           H                        ZM
           I                        ZN
           J                        ZO
           K                        ZP
           L                        ZQ
           M                        ZR
           N                        ZS
           O                        ZT
           P                        ZU
           Q                        ZV
           R                        ZW
           S                        ZX
           T                        ZY
           U                        ZZ
           V                        Za
           W                        Zb
           X                        Zc
           Y                        Zd
           Z                        Ze
           a                        Zf
           b                        Zg
           c                        Zh
           d                         2
           e                         3
           f                         4
           g                         5
           h                         6
           i                         7
           j                         8

8wki-pdb-bundle2.pdb:
           A                         9
           B                        ZA
           C                        ZB
           D                        ZC
           E                        ZD
           F                        ZE
           G                         0
           H                         1
           I                         r
           J                         s
           K                         t
           L                         u
           M                         v
           N                         w
           O                         x
           P                         y
           Q                         z
