ӣţţ  ţţ  ţţ  ţţô  ţţͼ  ţţ  ţţ  ţţ¼  ţţ  ţţ  ţţ¼  ţţ  ţţ  ţţ  ţţ¼  ţţ  ţţ  ţţ½  ţţ  ţţֱ