\begin{tabbing} (\=(RWO "select\_cons\_tl" 0) \+ \\[0ex]CollapseTHEN ((Auto\_aux (first\_nat 1:n) ((first\_nat 2:n \-\\[0ex]),(first\_nat 3:n)) (first\_tok SupInf:t) inil\_term)))$\cdot$ \end{tabbing}