      "Snacks": "Snack",
      "Snobs": "Snob",
      "Sockeln": "Sockel",
      "Sockels": "Sockel",
      "Socken": "Socke",
      "Sockens": "Socken",
      "Sodass": "sodass",
      "Sodenern": "Sodener",
 
</s>
    "Sobald": "sobald",
      "Snacks": "Snack",
      "Snobs": "Snob",
    "Sobald": "sobald",
      "Sockeln": "Sockel",
      "Sockels": "Sockel",
      "Socken": "Socke",
      "Sockens": "Socken",
      "Sodass": "sodass",
      "Sodenern": "Sodener",
keep add keep keep 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