ӣţţͼ  ţţ  ţţ¼  ţţ  ţţע  ţţ  ţţ  ţţ½  ţţ  ţţ  ţţ  ţţ  ţţ  ţţ  ţţ  ţţ  ţţ½  ţţ  ţţ  ţţ