$BR^3_{1}\quad U=(\iota , (2 3) , (2 3))\quad D=((2 3) , \iota , \iota)\quad \hbox{order 4} \quad c_1 = 2, c_2 = 0$\hfil\break $BR^3_{2}\quad U=((2 3) , \iota , \iota)\quad D=((2 3) , (2 3) , (2 3))\quad \hbox{order 4} \quad c_1 = 4, c_2 = 2$\hfil\break $BR^3_{3}\quad U=((1 2 3) , (1 2 3) , (1 2 3))\quad D=((1 2 3) , (1 2 3) , (1 2 3))\quad \hbox{order 6} \quad S, c_1 = 6, c_2 = 0$\hfil\break