ӣţţͼ  ţţ  ţţ½  ţţ  ţţ  ţţ½  ţţ  ţţ  ţţ½  ţţ淨  ţţ  ţţ¼  ţţ淨  ţţͼ  ţţ  ţţ¼  ţţֱ  ţţƻ  ţţ  ţţ