Crimes follow a sequence: Intention → Preparation → Attempt → Commission. Law often punishes attempt and commission; intention alone is not punishable unless accompanied by acts.
The four stages in the commission of a crime are:
1. Intention: The mental decision to commit a crime.
2. Preparation: Making necessary arrangements (e.g., buying weapons).
3. Attempt: Direct movement towards the execution of the crime.
4. Commission: The actual completion of the criminal act.