What is the code to snape years 5-7?

In "Harry Potter and the Order of the Phoenix," "Harry Potter and the Half-Blood Prince," and "Harry Potter and the Deathly Hallows," there are no specific codes provided for Snape's years 5-7. However, if you're referring to the themes and events surrounding Snape during these books, they include his complex relationship with Harry, his role as a double agent, and his ultimate sacrifice, which reveal his true loyalties and motivations.