ӣţţ  ţţô  ţţͼ  ţţ  ţţ  ţţͼ  ţţ  ţţ  ţţ½  ţţ  ţţ  ţţ  ţţ  ţţô  ţţ  ţţ  ţţ½  ţţ  ţţ淨  ţţͼ