ӣţţ½  ţţ¼  ţţ  ţţô  ţţ  ţţô  ţţƻ  ţţ  ţţ  ţţֱ  ţţ  ţţ  ţţ  ţţֱ  ţţƭ  ţţ½  ţţ  ţţ¼  ţţ  ţţֱ