Ответ:
Using approximate rhyme and quatrain, Emily successfully weaves a compelling poem. The rhyming scheme used is a-b-c-b is an erratic one. Each second and fourth are rhyming automatically. In case of second stanza, using rhyming scheme a-b-a-b, first and third verses rhyme with each other as does fourth and second. In concluding stanza, rhyming scheme is a-b-b-b, as per which, second, third and fourth verses rhyme.