Many Malayalam teachers maintain blogs with downloadable PDFs for school competitions. Search: "Nadanpattu prasanga ganangal PDF" (Folk song competition lyrics).
(Lyric excerpt - Thumbi Thullal)
Malayalam Nadan Pattukal are traditional folk songs from the state of Kerala, India. These songs are an integral part of Kerala's rich cultural heritage and are often sung during festivals, special occasions, and everyday life. The lyrics of these songs are a reflection of the daily lives, struggles, and emotions of the common people. malayalam nadan pattukal lyrics pdf
The longest known Nadan Pattu is "Iravathi Kuthu" from the Theyyam ritual, with over 200 stanzas. A full PDF of this runs to 60+ pages. malayalam nadan pattukal lyrics pdf