Nowadays, it is customary to refer to the left and right, upper and lower, outer and inner parts of compound characters as pianpangs.
[9] For example: Semantic-phonetic characters (形声字; 形聲字; xíngshēngzì) consist of semantic and phonetic components.
[14] They mostly came from ancient semantic-phonetic characters, where the semantic components lost their functions and became pure form.
The three concepts of pianpangs (偏旁), radicals (部首) and components (部件) often get confused among Chinese language learners.
And 畐 can be further decomposed into three primitive components 一, 口 and 田 in Chinese character external structures.
[21] The following table is based on the tables of pianpangs and bushous from Xiandai Hanyu Cidian and Xiandai Hanyu Guifan Cidian (现代汉语规范词典), including the frequently used pianpangs which exist in the Unicode character set.