ӣţţ  ţţ  ţţ¼  ţţ½  ţţ  ţţ  ţţ½  ţţ  ţţ  ţţƭ  ţţ  ţţ½  ţţ  ţţ  ţţ  ţţע  ţţƻƽ̨  ţţֱ  ţţ  ţţ