SCPY lub twj tso dej khib nyiab yog ib hom khoom siv pov tseg dej phwj tshwj xeeb, tsim los nrog lub zog tiv thaiv kev txhaws thiab kev pov tseg cov khoom tsis huv. Nws tuaj yeem siv los pov tseg cov khoom tsis huv ntev heev thiab ntau dua 3 nti cov khoom khov.