public boolean testFr(LinkedList<String> dico, int[] alphabet, String test, String mot){
		int bInf, bSup;
		ListIterator<String> i;

		if(!(test.length()!=7 || test.charAt(0)!=mot.charAt(0))){
			bInf=alphabet[test.charAt(0)-'a'];
			bSup=dico.size();
			if(test.charAt(0)!='z')
				bSup=alphabet[test.charAt(0)-('a'-1)];
			i=dico.listIterator(bInf);
			while(bInf<bSup){
				if(test.equals(i.next()))
					return true;
				bInf++;
			}
		}
		return false;
	}