ӣţţ淨  ţţ  ţţֱ  ţţ½  ţţƻ  ţţ  ţţ  ţţ¼  ţţ  ţţ淨  ţţ½  ţţ¼  ţţע  ţţ  ţţ¼  ţţ  ţţͼ  ţţƭ  ţţ  ţţ