cannot

$$\begin{array}{c c}{{}}&{{D e l C}}&{{}}&{{D e l M}}\\ {{}}&{{R H C}}&{{}}&{{R H M}}\end{array}$$

s ets

$$D e l C\qquad\quad D e l M$$
DelC PUM    RHM  DelM DelC R HC DelC RH GetC        PUM GetC DelC PUM DelM N