Who were the famous calligraphers in the Tang Dynasty?

Yan Zhenqing, Liu Gongquan, Zhang Xu, Huai Su, Yu Shinan, Chu Suiliang, Xue Ji, Li Yong,, Wei, Huang Fuyue, Han, Liu Zongyuan, Liu Yuxi, Fang, Ma Zhang Yu, Li Zhongcheng, Chu Changwen, Sun Guoting, He Zhizhang and Li Yang.