ӣţţ  ţţ  ţţ  ţţ  ţţ  ţţֱ  ţţ  ţţ  ţţͼ  ţţ  ţţͼ  ţţ½  ţţ淨  ţţ  ţţע  ţţ½  ţţֱ  ţţͼ  ţţ  ţţ½