koreanlit1-4, Exercise 1: The sijo form

Model answer:

Three lines of about 14 to 16 syllables each (42 to 48 in total). Each line has four groups of syllables, and the first half of the third line is a "twist". It emerged in the Goryeo dynasty, flourished in Joseon and is still written; the earliest surviving sijo is from the late 14th century; the name sijo came from a 19th-century restoration movement.

Kinds: pyeong sijo (standard), ossijo (one line expanded), sasol sijo (several lines expanded, narrative or chatty), yeon sijo, sijo chang (sung), modern sijo.

Inconsistency: the article gives syllable counts but also says sijo is "an accentual verse form, not syllabic". The article does not reconcile these.

Source: Wikipedia, Sijo (tagged "needs more citations").