Alliteration is apparent throughout, as the poem is part of the Old English alliterative tradition. Often these tracks are used for "toasters" rapping heavily rhymed and alliterative lyrics. Old English, German and Norse poems were written in alliterative verse, usually without rhyme. Some of those contain allusions to Norse mythology and even short poems in alliterative verse. The patterns of unstressed syllables vary significantly in the alliterative traditions of different Germanic languages. Further the Bengali manner of alliterative wordplay was often lost in translation. Old English poetry is mostly alliterative verse. "Beowulf" is an Old English epic poem in alliterative verse. Each line of traditional Germanic alliterative verse is divided into two half-lines by a caesura. The epic is written in old Estonian alliterative verse. The inherited form of alliterative verse was modified somewhat in Old Norse poetry. The Eddic poems are composed in alliterative verse. Some of them contain short poems in alliterative verse. Alliterative verse is occasionally written by other modern authors. It has since become a common idiom, an alliterative irreversible binomial.