Nws yog dav siv rau hauv kev txhaj tshuaj - molding scenarios, tshwj xeeb tshaj yog haum rau kev tsim khoom thiab kev ua cov khoom uas muaj qhov xav tau siab gloss, thiab siv rau cov khoom sab hauv thiab cov casings ntawm cov khoom siv hauv tsev (xws li lub plhaub cua txias), cov khoom sab hauv thiab cov casings ntawm cov khoom siv hluav taws xob, nrog rau cov khoom ua si.
