... llẫẫnn ( ( aauu// ââuu ) ) ,, ââmm đđầầuu ( ( ll//nn ) ) ,, ââmm ggiiữữaa vvầầnn ( ( ii// iiêê ) ) ... :: ( ( 11pphhúútt ) ) 22..HHưướớnngg ddẫẫnn cchhíínnhh ttảả:: ( ( 77pphhúútt ) ) - - ... ( ( 55pphhúútt ) ) 66.. CCủủnngg ccốố,, ddặặnn ddòò:: ( ( 22pp hhúútt ) ) - - HHSS::...