\begin{tabbing} (\=(RWH (LemmaC `eq\_int\_eq\_true`) 3) \+ \\[0ex]CollapseTHENA ((Auto\_aux (first\_nat 1:n) ((first\_nat \-\\[0ex]1:n),(first\_nat 3:n)) (first\_tok :t) inil\_term)))$\cdot$ \end{tabbing}