ӣţţƽ̨  ţţƭ  ţţ  ţţ  ţţ½  ţţ¼  ţţ  ţţ  ţţ½  ţţ  ţţ  ţţ  ţţ  ţţͼ  ţţ½  ţţֱ  ţţ  ţţƭ  ţţ  ţţ