| There are also instances in which tan, referred to as 'gaitan' (lit. outer tan), are arranged around the exterior wall of the building, whereas those on the inside are called 'naitan' (lit. inner tan). |
また、建物の外部の壁に沿って単が設けられる場合もあり、これを外単と言って、内部の内単と区別する。 |