ӣţţ  ţţ½  ţţ  ţţ¼  ţţ  ţţ  ţţ  ţţ  ţţ  ţţ  ţţ  ţţ  ţţ  ţţ  ţţͼ  ţţ  ţţ  ţţ  ţţƽ̨  ţţƻ