\begin{tabbing}
(\=(((((((((ParallelOp ({-}2)) \+
\\[0ex]CollapseTHENA ((Auto\_aux (first\_nat 1:n) ((first\_nat 1:n
\-\\[0ex])\=,(first\_nat 1000:n)) (first\_tok :t) inil\_term)))$\cdot$) \+
\\[0ex]CollapseTHEN (Reduce 0))$\cdot$) 
\\[0ex]
\\[0ex]CollapseTHEN (SimpConcl))$\cdot$) 
\\[0ex]CollapseTHEN (RWO "last\_cons" 0))$\cdot$) 
\\[0ex]CollapseTHEN (
\-\\[0ex](Auto\_aux (first\_nat 1:n) ((first\_nat 1:n),(first\_nat 3:n)) (first\_tok :t) inil\_term)))$\cdot$
\end{tabbing}