Add forms to lexemes that combine multiple lexemes

[siiptuo]

Find candidates with something like this:

SELECT ?lexemeId ?lemma WHERE {
  ?lexemeId dct:language wd:Q1860;
    wikibase:lemma ?lemma;
    wdt:P5238 ?lexemes.
  FILTER(NOT EXISTS { ?lexemeId ontolex:lexicalForm ?form. })
}

Maybe skip idioms and other multi-word lexemes as these can be difficult to inflect correctly.