ӣţţƭ  ţţ  ţţƻ  ţţ  ţţ  ţţ  ţţô  ţţֱ  ţţ  ţţ  ţţ½  ţţ  ţţֱ  ţţô  ţţ  ţţ  ţţ½  ţţ½  ţţ½  ţţ