is it possible parent sealed class inherit to child sealed class

Error   1   'ConsoleApplication4.Program': cannot derive from sealed type 'ConsoleApplication4.Class1'  E:\silverlight\ConsoleApplication4\ConsoleApplication4\Program.cs   9   23  ConsoleApplication4
Error   2   'ConsoleApplication4.Class1.method()' cannot be sealed because it is not an override    E:\silverlight\ConsoleApplication4\ConsoleApplication4\Class1.cs    11  27  ConsoleApplication4