      "Sockels": "Sockel",
      "Socken": "Socke",
      "Sockens": "Socken",
      "Sodenern": "Sodener",
      "Sodeners": "Sodener",
      "Sofas": "Sofa",
      "Sofern": "sofern",
 
</s>
    "Sodass": "sodass",
      "Sockels": "Sockel",
      "Socken": "Socke",
      "Sockens": "Socken",
    "Sodass": "sodass",
      "Sodenern": "Sodener",
      "Sodeners": "Sodener",
      "Sofas": "Sofa",
      "Sofern": "sofern",
keep keep add keep keep keep keep
 German lemmatizer additions (#2529)

* lemma of was-> was

* added new pairs issue @2486

* added article tests
spacy/lang/de/lemmatizer.py