class Test1
        def test1 
        end
end

class Test2 < Test1
        def test2 
        end     
end

class Test3 < Test2
        def test3 
        end     
end

class Test4 < Test3
        def test4 
        end     
end

class Test5 < Test4
        def test5 
        end     
end

class Test6 < Test5
        def test6
                t
        end     
end
