public static int getTwoWordFreq(Term from , Term to) {
		if(from.getMaxPath().getTermNature().frequency==1||
				to.getMaxPath().getTermNature().frequency==1){
			return 0 ;
		}
		WoodInterface branch = FOREST ;
		String content = from.getName() ;
		for (int i = 0; i < content.length(); i++) {
			branch = branch.get(content.charAt(i)) ;
			if(branch==null){
				return 0 ;
			}
		}
		branch = branch.get(LC) ;
		if(branch==null){
			return 0 ;
		}
		content = to.getName() ;
		for (int i = 0; i < content.length(); i++) {
			branch = branch.get(content.charAt(i)) ;
			if(branch==null){
				return 0 ;
			}
		}
		
		if(branch.getStatus()<2){
			return 0 ;
		}
		
		return Integer.parseInt(branch.getParams()[0]) ;
	}