What are the inscriptions on bronze in the Western Zhou Dynasty?

Among the oldest extant books in China, Shangshu, there is 15 which can be regarded as the works of the Western Zhou Dynasty. Among them, the eight letters patent in the early Zhou Dynasty (Dagao, Gao Kang, Jiugao, Zicai, Zhao Gao, Luogao and Toz) recorded the historical facts that the Western Zhou Dynasty conquered the eastern land and strengthened its rule over the Yin people. These records have become important materials for scholars to study the history of the Western Zhou Dynasty.