Answer :
The four three-stress rhyming lines that follow the bob are called tail-rhyme.
In the Middle Ages, Sir Gawain and the Green Knight was written in stanzas that contain a group of alliterative lines. Each stanza is followed by five short lines that rhyme a b a b a. The first of these rhyming lines contains just one stress and is known as the bob.
The four three-stress rhyming lines that follow the bob are known as tail-rhyme. The bob serves as a quick reminder of the overall rhyme scheme, while the tail-rhyme helps to unify each stanza, as well as the entire poem.
The poet uses alliteration and rhyme throughout the poem to create a musical effect, resulting in a more enjoyable reading experience.
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