1drop table if exists con, aux, nul, lpt1, com1, `clock$`; 2create table con (a int); 3drop table con; 4create table aux (a int); 5drop table aux; 6create table nul (a int); 7drop table nul; 8create table lpt1 (a int); 9drop table lpt1; 10create table com1 (a int); 11drop table com1; 12create table `clock$` (a int); 13drop table `clock$`; 14