\begin{tabbing} (\=(((((MemCD) \+ \\[0ex]CollapseTHENA ((Auto\_aux (first\_nat 1:n) ((first\_nat 1:n),(first\_nat 3:n \-\\[0ex])\=) (first\_tok :t) inil\_term)))$\cdot$) \+ \\[0ex]CollapseTHEN (SplitOnConclITE))$\cdot$) \\[0ex]CollapseTHEN ( \-\\[0ex](Auto\_aux (first\_nat 1:n) ((first\_nat 2:n),(first\_nat 3:n)) (first\_tok SupInf:t \\[0ex]) inil\_term)))$\cdot$ \end{tabbing}