extract multigram keywords of "Developer of an online work collaboration platform designed to boost productivity between teams. The company's platform is an all-in-one tool that guides users to write, plan, collaborate and organize their workflow and is designed for task and project management, enabling teams and individuals to systematically manage workflow and improve productivity at work. | Notion is the all-in-one workspace for your notes, tasks, wikis, and databases" into json format.  Provide exactly two different responses that are separated with 6 asterisk symbols: ******.
user