A dual movie format could mean two different things: either two separate movies that are related thematically or narratively 

A split-screen presentation where two stories are shown simultaneously. Here are two ideas for movies about 12 stories that could fit either format: 

Follows the lives of six individuals living in a luxurious skyscraper, each occupying a different floor.  

Their stories intertwine as they navigate wealth, power, and betrayal in their quest for success. 

Focuses on six characters residing in a run-down apartment complex just across the street from the skyscraper.  

Their struggles with poverty, crime, and redemption bring them together in unexpected ways. 

Both movies would show contrasting yet interconnected perspectives, highlighting how social status and environment shape people's lives. 

Tells the stories of six individuals during the day, each facing personal challenges such as relationships, career dilemmas, or identity crises. 

Follows six different characters during the same timeframe but at night, delving into darker themes like crime, addiction, or secrets coming to light. 

The split-screen format would allow viewers to see parallels and contrasts between the characters' experiences as they navigate their respective journeys. 

Both concepts aim to explore diverse narratives within the framework of 12 interconnected stories, offering a rich tapestry of human experiences and emotions.