$R^4_{1}\quad U=((1 4 3) , \iota , (1 4 3) , (1 4 3))\quad D=\iota$\hfil\break
$R^4_{2}\quad U=((1 4 3) , (1 3 4) , (1 4 3) , (1 4 3))\quad D=\iota$\hfil\break
$R^4_{3}\quad U=((1 4 3) , (1 4 3) , (1 4 3) , (1 4 3))\quad D=\iota$\hfil\break
$R^4_{4}\quad U=((1 4) , \iota , \iota , (1 4))\quad D=\iota$\hfil\break
$R^4_{5}\quad U=((1 4) , (2 3) , (2 3) , (1 4))\quad D=\iota$\hfil\break
$R^4_{6}\quad U=((1 4) , (1 4) , \iota , (1 4))\quad D=\iota$\hfil\break
$R^4_{7}\quad U=((1 4) , (1 4) , (1 4) , (1 4))\quad D=\iota$\hfil\break
$R^4_{8}\quad U=((1 4 2 3) , (1 4 2 3) , (1 4 2 3) , (1 4 2 3))\quad D=\iota$\hfil\break
$R^4_{9}\quad U=((1 4)(2 3) , \iota , \iota , (1 4)(2 3))\quad D=\iota$\hfil\break
$R^4_{10}\quad U=((1 4)(2 3) , (2 3) , (2 3) , (1 4)(2 3))\quad D=\iota$\hfil\break
$R^4_{11}\quad U=((1 4)(2 3) , (1 4) , (1 4) , (1 4)(2 3))\quad D=\iota$\hfil\break
$R^4_{12}\quad U=((1 4)(2 3) , (1 4)(2 3) , (1 4)(2 3) , (1 4)(2 3))\quad D=\iota$\hfil\break