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