Pinan shodan, Pinan nidan, Pinan sandan, Pinan yondan, Pinan godan (Pinan 1-5). These kata were developed by Master Itosu to make learning the long and difficult kata known as Kusanku-dai (also known as Kanku-dai, and Kosokun-dai) easier to learn and parts of this intricate kata are broken down into 5 parts of varying difficulty.