docs: public static String genSegSequence(String sent,String delimer,int tagnum){		
  		String[] wordArray = sent.split(delimer);	
  		
  		if(tagnum ==4 )
  			return genSequence4Tags(wordArray);
  		else if (tagnum == 6)
  			return genSequence6Tags(wordArray);
  		else 
  			return null;
  	}