\begin{tabbing}
(\=(InstHyp [$i$+1] ({-}3)) \+
\\[0ex]CollapseTHENA ((Auto\_aux (first\_nat 1:n) ((first\_nat 2:n
\-\\[0ex]),(first\_nat 3:n)) (first\_tok SupInf:t) inil\_term)))$\cdot$
\end{tabbing}