\begin{tabbing}
(\=(((RecUnfold `primrec` 0) \+
\\[0ex]CollapseTHEN (Reduce 0))$\cdot$) 
\\[0ex]CollapseTHEN (Repeat ((((
\-\\[0ex]S\=plitOnConclITE) \+
\\[0ex]CollapseTHENA ((Auto\_aux (first\_nat 1:n) ((first\_nat 1:n),(first\_nat 
\-\\[0ex]1\=000:n)) (first\_tok :t) inil\_term)))$\cdot$) \+
\\[0ex]CollapseTHEN (Try (Complete (Auto\_aux (first\_nat 
\-\\[0ex]1:n) ((first\_nat 2:n),(first\_nat 3:n)) (first\_tok SupInf:t) inil\_term))))$\cdot$))$\cdot$
\end{tabbing}