{\displaystyle {\begin{aligned}H_{\cong _{\varepsilon }}(O)=&\{\{x_{1},x_{8},x_{10},x_{11}\},\{x_{1},x_{9},x_{10},x_{11},x_{14}\},\\&\{x_{2},x_{7},x_{18},x_{19}\},\\&\{x_{3},x_{12},x_{17}\},\\&\{x_{4},x_{13},x_{20}\},\{x_{4},x_{18}\},\\&\{x_{5},x_{6},x_{15},x_{16}\},\{x_{5},x_{6},x_{15},x_{20}\},\\&\{x_{6},x_{13},x_{20}\}\}.\end{aligned}}}