Although such structure is unusual , along with the urokoita , the structure doesn ' t show an irrationality; rather , it manifests extraordinary skills of urakusai , who is said to have been ' a special tea practitioner other than the seven disciples of rikyu .' 鱗板とともに異例の構成であるが不合理性は感じられず、「利休七哲とは別格」といわれる有楽斎の並々ならぬ技量を示す。