I don't have time to do a complete sequence analysis of the script, however it strikes me you can break down the story into four parts: 1. Barney's marriage with Clara 2. Barney's marriage with The 2nd Mrs. P 3. Barney's marriage to Miriam 4. Barney's descent into Alzheimers and death Instead of Four Weddings and a Funeral, this is Three Marriages and a Cemetery.