Template metaprogram to find similar consecutive typenames

I am new to template meta programming and was trying to create a program that would find if a parameter pack has consecutive same type names. For example <int, int>, <int, char, char> would return true and <int,char> and <int, char, int> would not.

I managed to write this piece of code but it seems to be comparing each value of parameter pack with itself. I am just looking for a way to iterate through the values of parameter pack to compare with it's consecutive element.

template<typename T, typename U>
struct sameTypename{
    enum {value = false};
};

template<typename T>
struct sameTypename<T, T>{
    enum {value = true};
};

template <typename T, typename ...args>
struct consTypename{
    enum {value = (sameTypename<consTypename<args...>, consTypename<args...>>::value)};
};

template <typename T>
struct consTypename<T, T>{
    enum {value = true};
};

template <typename T>
struct consTypename<T>{
    enum {value = false};
};