.  \[varyzero0-0\] If $\mathcal{C}'=\mathcal{C}\left( \left[\tiny{{{(e,o)} \atop\rule{0pt}{00pt} {(\emptyset,e)}}}\right] \rightarrow \left[\tiny{{{(\emptyset,o)} \atop\rule{0pt}{00pt} {(e,\emptyset)}}}\right]\right)$, then $\kappa({\mathcal{C}'})\leq \kappa({\mathcal{C}})$.  