The poetic form with kireji known as HAIKU (5 letters) is a traditional Japanese form of poetry consisting of three lines. The first and last lines have five syllables each, while the middle line has seven syllables. Kireji, which are also known as cutting words, are used to separate the two parts of the poem and create a pause or shift in the poem's meaning. HAIKU often focus on nature and the beauty of the natural world.