    New chain ID            Original chain ID

7uig-pdb-bundle1.pdb:
           a                         a
           d                         d
           f                         f
           g                         g
           h                         h
           i                         i
           j                         j
           k                         k
           n                         n
           q                         q
           r                         r
           s                         s
           t                         t
           u                         u
           v                         v
           w                         w
           z                         z
