Is there a Semigroup for List (not ListK)? Or do ...

# arrow

[julian]

Is there a Semigroup for List (not ListK)? Or do I have to be working with ListK to use Semigroups?
Specifically, I was trying to use Either.combine on two Either<List<A>, List<B>>. But couldn't find a semigroup() that returns a Semigroup<List<T>>