Template:Iterate A

{{subst:x{{{1}}}|{{subst:substif1}}}}{{subst:subst}}{{{2}}}|{{{3}}}|{{{4}}}|{{{5}}}|{{{6}}}|{{{7}}}|{{{8}}}|{{{9}}}{{subst:rightbraces}}{{subst:x{{{1}}}|{{subst:rightbraces}}}}

Substituting this template produces one or more new substitution template calls, allowing recursive change of a page, see Help:Recursive conversion of wikitext.