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