In our system we do Taeguk, which is the norm for Kukkiwon. Additionally the colour belts need to learn four Basic patterns and eight patterns that I believe are unique to our system (OMAC) called Dae Mang. For Black Belt we then had to learn Koryo, Chul-Gi 1, and Bal Sek. We also had to re-learn Tae Guk 1-8. For 2nd Dan I have to know all of those, plus: Ship Su, Sam Gu Kwan, Chul Gi 2, Kum Ga, and Pal Ban Moo 1-3.