This domain name can’t be used because it contains a protected word or inappropriate language.

I am trying to register kuntau.org to the Microsoft Domain services but get the following error message.

This domain name can't be used because it contains a protected word or inappropriate language. Please contact support if you feel this is not the case.

The domain refers to a type of Martial Arts in Asia. I cannot see that the domain contains any protected or inappropriate words.

Please can you update your systems to allow this.

Many thanks