for $art in collection("talismane_3546")//file
for $elt in $art/item
let $conc2 :=
  if (($elt/a[4]/text()="NC") and ($elt/following-sibling::item[1]/a[4]/text()="P") and ($elt/following-sibling::item[2]/a[4]/text()="NC") and ($elt/following-sibling::item[3]/a[4]/text()="P") and ($elt/following-sibling::item[4]/a[4]/text()="NC")) then (
    concat($elt/a[2]/text()," ",$elt/following-sibling::item[1]/a[2]/text()," ",$elt/following-sibling::item[2]/a[2]/text()," ",$elt/following-sibling::item[3]/a[2]/text()," ",$elt/following-sibling::item[4]/a[2]/text())
  )
  else if (($elt/a[4]/text()="NC") and ($elt/following-sibling::item[1]/a[4]/text()="ADJ")) then (
       concat($elt/a[2]/text()," ",$elt/following-sibling::item[1]/a[2]/text())
  )
  else if (($elt/a[4]/text()="ADJ") and ($elt/following-sibling::item[1]/a[4]/text()="NC")) then (
       concat($elt/a[2]/text()," ",$elt/following-sibling::item[1]/a[2]/text())
  )
  else if (($elt/a[4]/text()="V") and ($elt/following-sibling::item[1]/a[4]/text()="DET") and ($elt/following-sibling::item[2]/a[4]/text()="NC")) then (
       concat($elt/a[2]/text()," ",$elt/following-sibling::item[1]/a[2]/text()," ",$elt/following-sibling::item[2]/a[2]/text())
  )
  else (
    "
"
  )
where $conc2 != "
"
return $conc2