The form in which the narrative plot of a story is commonly found is:
Start.
Developing.
Final.
Explanation:
To properly elaborate a narrative plot you must focus on three guidelines that I will mention below:
The beginning where you narrate some antecedents of the characters and the world in general where they operate.
The development where the main character or characters must overcome some eventuality that gives meaning to the story.
The end where the main characters can reflect on what happened throughout their journey, expose some actions performed as positive or negative, and visualize the future that comes to them.
Think of verbs as "action words" done by the subject. The subject in this sentence is "we". What did we do? "We" "heard" and had "seen". So the verbs would be "heard" and "seen"