1 Find
 the longest carbon chain.    Use
 as base name with an ane ending.
 2 Locate
 any branches on chain.  Use
 base names with a yl ending.
 3 For
 multiple branch of the same type,    modify
 name with di, tri, ...
 4 Show
 the location of each branch with              
  numbers.
 5 List
 multiple branches alphabetically                                    -  the
 di, tri, ... don’t count..