What are the four-character squares in aabb style?

The four words about AABB are: diligent, conscientious, stable, safe, happy, up and down, laughing, false or true, left and right, hiding, stumbling, stumbling.

AABB's four-character case, also known as reduplicated idioms, refers to the overlapping of a word in the usual four-character case idioms. Call it an overlapping idiom. In the following example, A, B and C respectively represent three different words in the four-character idiom, and the other repeated word is the overlapping content.

Words are the combined names of words and phrases, including words (including words and compound words) and phrases (also called phrases), which constitute the smallest structural unit of sentence articles. Four-character case is a common word composed of four words. The concept of four-character case is very broad, including idioms and non-idioms, also called fixed phrases or free phrases.

? The origin of four-character idioms:

1, Many myths and fables from ancient China have profound moral and educational significance and are often summarized as idioms.

2. Judging from historical stories, there were many famous historical stories and events in ancient China, which were condensed into four-character idioms by later generations.

3. Sentences derived from ancient books can be divided into two situations: one is to directly quote the original sentences in ancient books; One is processing, or shrinking, or reducing, or increasing, or changing.