ӣţţ½  ţţ  ţţ  ţţ¼  ţţ  ţţ  ţţ  ţţ  ţţ¼  ţţ  ţţô  ţţ½  ţţ  ţţ  ţţ  ţţֱ  ţţ  ţţע  ţţ½  ţţ