The majority of simplified characters are drawn from conventional abbreviated forms, or ancient standard forms. For example, the orthodox character 來 lái ("come") was written with the structure 来 in the clerical script (隶书 / 隸書, lìshū) of the Han dynasty. This clerical form uses one fewer stroke, and was thus adopted as a simplified form. The character 雲 yún ("cloud") was written with the structure 云 in the oracle bone script of the Shang dynasty, and had remained in use later as a phonetic loan in the meaning of "to say" while the 雨 radical was added to differentiate meanings. The simplified form adopts the original structure.

What are drawn from conventional abbreviated forms?