In Brandon Sanderson's Stormlight Archive novels, the chapters are grouped into parts, the titles of the parts combining to form a ketek. For example, in the first book, The Way of Kings:
- Above Silence
- The Illuminating Storms
- Storm's Illumination
- The Silence Above
Above silence, the illuminating storms — dying storms — illuminate the silence above.
The ketek is described in the endnote:
The above sample is noteworthy as it is a ketek, a complex form of holy Vorin poem. The ketek not only reads the same forward and backward (allowing for alteration of verb forms) but is also divisible into five distinct smaller sections, each of which makes a complete thought.
The complete poem must form a sentence that is grammatically correct and (theoretically) poignant in meaning.
Are keteks (the form: palindrome [allowing for conjugation, etc.], n [≥2] thoughts) based on some real-life form of poetry, or are they purely fictional?