Final answer:
The poet uses an AA BB rhyming structure in the poem.
Step-by-step explanation:
The poet uses an AA BB rhyming structure in this poem. This means that the first and second lines of each stanza rhyme with each other, and the third and fourth lines of each stanza also rhyme with each other.
For example, in the first stanza, 'up' and 'cup' rhyme, and 'behind' and 'bed' rhyme. In the second stanza, 'black' and 'back' rhyme, and 'way' and 'day' rhyme.
Using this rhyming structure creates a clear and cohesive rhythm in the poem.