In Tsutsumi Jugo Ryu the gradings are as follows:
White belt                      Ungraded        
Yellow & white belt        9th Kyu       
Yellow belt                     8th Kyu       
Blue & white belt           7th Kyu       
Blue belt                        6th Kyu       
Green & white belt        5th Kyu        
Green belt                    4th Kyu
Purple & white belt       3rd Kyu
Purple belt                    2nd Kyu
Brown belt                    1st Kyu
Black belt                     1st Dan
Black belt                      2nd Dan
Black belt                      3rd Dan
Black belt                      4h Dan

Grades after 4th Dan are not graded but are honorary grades issued at the discretion of Peter Clarke.