SFSpeechRecognizer Addspunctuation is not working why?

SFSpeechRecognizer addspunctuation is not working for all languages, it is giving only for some languages like English,Spanish,French,German,Russian , other languages not at all giving punctuation, how can I get punctuation for all languages? if anyone knows help me.

SFSpeechRecognizer Addspunctuation is not working why?
 
 
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