Seven deadly sins, but nine circles of the Inferno. The first cycle is Limbo, where the unbaptized and virtuous pagans reside, guilty of the sin of not accepting the Lord Jesus Christ as Saviour. I suppose it does not fall into any of the seven sins directly, but it is a sin nevertheless in the eyes of God.

The other cycles are Lust, Gluttony, Greed, Anger, Heresy, Violence, Fraud and Treachery, in that order. Compared to the seven cardinal sins, Sloth, Envy and Pride are missing, but perhaps those sins are but merely a precursor to the sins depicted in each cycle. And Wroth can be split into Anger and Violence.