private int getSenseDirection() {
		char read = (char) readAhead;
		int s = -1;
		switch(read) {
		case'A': case'a':
			
			break;
		case'H': case'h':
			break;
		case'L': case'l':
			break;
		case'R': case'r':
			break;
		default:
			break;
		}
		return s;
	}