ӣţţô  ţţƭ  ţţ  ţţ  ţţ  ţţƭ  ţţ  ţţ  ţţ  ţţ  ţţ¼  ţţ  ţţ  ţţ  ţţ½  ţţ  ţţ½  ţţ  ţţ¼  ţţֱ