plant, representing the students improvement, participation and advancement, It symbolizes Summer. Many schools and organizations still opt to use the black belt. The Moo Duk Kwan, and some Chung Do Kwan schools of Tang Soo Do incorporate a red-striped midnight blue (or black) belt to denote individuals who have reached the rank of Sa Beom (master 사범님/師範님), or 4th dan. The original non-dan, or geup, belt colors established by Hwang Kee were white belt, green belt, and red belt. In the 1970s, an orange belt was added after the white belt, along with either one or two stripes on the orange, green and red belts, encompassing ten geup (student) levels, and is currently the system in use in the Moo Duk Kwan. Many variations of this ranking system are still used and typically employ other colors (such as yellow, brown, purple, and blue). However, this is primarily a western influence. The black belts (or midnight blue belts) are called dans and each degree has its own specific name. The dan rank ranges from 1st through 9th degree. In the Moo Duk Kwan, dan level is known by its Korean numeration, such as cho dan (1st), ee dan (2nd) and sam dan (3rd), and onward. In many organizations, the titles of kyosa (instructor 교사/敎師) and sa bom (master 사범/師範) are separately awarded after successfully demonstrating ability, knowledge, understanding and character for that level in a dan simsa (심사/審査), or test. One may not test for kyosa (certified instructor) until 2nd dan, or sabom (master instructor) until 4th dan or above. Dan levels from 4th dan onward are known as kodanja (고단자/高段者), whether sabom or not. Also in the U.S., a simple timing structure was created for the dan ranking system. If in constant study, then it was easy to measure when testing for the next rank. The next dan number was equal to the minimum number of years that must be spent training to achieve that dan. For example, a first dan would have two years before they could be a candidate for second dan, and so on. Techniques and patterns Hyung Forms (hyung) vary depending upon the founder or head of the different federations of Tang Soo Do. Tang Soo Do forms are a set of moves demonstrating a defensive or aggressive action for every movement taken mainly from Japanese shotokan karate kata. They are based on an offender attacking