\begin{tabbing}
(\=(((((((((MoveToConcl 3) \+
\\[0ex]CollapseTHEN (ListInd 2))$\cdot$) 
\\[0ex]CollapseTHEN (RAA (D 0)))$\cdot$) 
\\[0ex]
\\[0ex]CollapseTHEN (ListInd ({-}1)))$\cdot$) 
\\[0ex]CollapseTHEN (Reduce 0))$\cdot$) 
\\[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}