Friends who are good at ancient Chinese characters, give some advice. What are the next six words? What are the two words behind Daming Xuande?

The year of Jingdezhen official kiln porcelain in Xuande period of Ming Dynasty. These six characters are "Daming Xuande Year System", the common one is blue-and-white regular script "Daming Xuande Year System", followed by blue-and-white regular script "Xuande Year System". Xuande official kiln regular script seems to be written by one person, delicate and dignified, vigorous and powerful. The word "de" follows the ancient style in the Han stele, and the right half of the word "heart" has no horizontal line, which becomes the word "de". Moreover, the opposite sides have a large slope. The font style was deeply influenced by calligrapher Shen Du in the early Ming Dynasty. The color of the material is uneven, simple and solemn, full of the charm of Yongle Imperial Kiln four-character printing style.