\begin{tabbing}
(\=(((Unfold `strict\_part` 0) \+
\\[0ex]CollapseTHEN (AGenRepD ["compound";"basic"]))$\cdot$) 
\\[0ex]
\\[0ex]CollapseTHENA ((Auto\_aux (first\_nat 1:n) ((first\_nat 1:n),(first\_nat 3:n)) (first\_tok :t
\-\\[0ex]) inil\_term)))$\cdot$
\end{tabbing}