标准代码279LT16LT16LBEFSTSERLLLLLLLLLUGLULULLULLULLLLUTLLLLOUTLLLLLLIGLSLOLETLETLLLLETLLLLLLLLTLLLLLLLLLLLLLLLLLLLLLLLLLLIGLLLLLLLLLLLLLLLLLLLLLLLLLLLETLLLETLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL