Examples are "Interpretation Learning of Classic of History" by Hi Kan (the character for Kan is 虎+甘) of Liang and "Interpretation Learning of the Analects of Confucius" by O Gan.
梁の費カン（ひかん、「かん」は虎＋甘）の『尚書義疏』や皇侃（おうがん）の『論語義疏』がある。