public String Compose(String sym,int x) {
		String tmp;
		switch(sym){
		case "retrograde":
			tmp=retrograde();
			break;
		case "transpose":			
			tmp=transpose(x);
			break;
		case "reflection":
			tmp=reflection(x);
			break;
		case "doNothing":
			tmp=doNothing();
			break;
		default:
			tmp="InvalidSymmerty";
		}
		
		return tmp;
	}