\(\left( \begin{array}{cc} \{1,2,3,4,5\} & \{1,2,3,4,6\} \\ \{1,2,3,4,5\} & \{1,2,4,5,6\} \\ \{1,2,3,4,5\} & \{2,3,4,5,6\} \\ \{1,2,3,4,6\} & \{1,2,3,4,5\} \\ \{1,2,3,4,6\} & \{1,2,4,5,6\} \\ \{1,2,3,5,6\} & \{1,2,4,5,6\} \\ \{1,2,4,5,6\} & \{1,2,3,4,5\} \\ \{1,2,4,5,6\} & \{1,2,3,4,6\} \\ \{1,2,4,5,6\} & \{1,2,3,5,6\} \\ \{1,2,4,5,6\} & \{1,2,4,5,6\} \\ \{1,2,4,5,6\} & \{1,3,4,5,6\} \\ \{1,2,4,5,6\} & \{2,3,4,5,6\} \\ \{1,3,4,5,6\} & \{1,2,4,5,6\} \\ \{2,3,4,5,6\} & \{1,2,3,4,5\} \\ \{2,3,4,5,6\} & \{1,2,4,5,6\} \\ \end{array} \right)\)
.