000} \right\rangle \;, \\[0pt]  U^{-0}_\omega &=& \left\langle e^{0}+\operatorname{i}\,e^{000},\; e^{0}-\operatorname{i}\,e^{000},\; e^{0}-\operatorname{i}\,e^{000},\; e^{0}+\operatorname{i}\,e^{000} \right\rangle \;, \\[0pt]  U^{-0}_\omega &=& \left\langle 0+\operatorname{i}\,e^{00}+\operatorname{i}\,e^{00}-e^{0000} \right\rangle \;