for $art in collection("sortie-3214-regexp")//article
for $elt in $art/element
let $nextElt := $elt/following-sibling::element[1]
let $nextnextElt := $elt/following-sibling::element[2]
where $elt/data[1][contains(text(),"VER")]  and $nextElt/data[1][contains(text(),"DET")]   and $nextnextElt/data[1]="NOM"
return concat($elt/data[3]/text()," ",$nextElt/data[3]/text()," ",$nextnextElt/data[3]/text()," ")