using System;
using System.Runtime.CompilerServices;


public class SMtape
{
    private SMtape _concreteState;

    public SMtape()
    {
    }
}





public class SMtapeNoTapeIn : SMtape
{
}


public class SMtapeTapeInNotEnd : SMtape
{
}

public class SMtapeTapeInEnd : SMtape
{
}