Sonnet 30 up of fourteen lines in three quatrains and a couplet, rhyming "abab cdcd efef gg". While using the rhyming and metrical structure of the 'English' or 'Surreyan' sonnet, Shakespeare often also reflected the rhetorical form of the Italian form also known as the Petrarchan sonnet. It divides the sonnet into two parts: the "octet" (the first eight lines) usually states and develops the subject, while the "sestet" (the last six lines) winds up to a climax. Thus a change in emphasis, known as the "volta", occurs between the end of the eighth and the beginning of the ninth lines —
Sonnet 42 rhymes at the end of the lines: especially in the second quatrain as a poetic device, similar to sonnet 40. "The poem is essentially a sad one…it's sadness heightened by the feminine endings, six in all [out of seven]". Many critics seem to agree with this reading of the feminine endings, and note that additionally, the author uses two words to imply the emotionality tied up in his sonnet. The word "loss" is repeated throughout this poem, appearing six times. The repetition of this word emphasizes how strongly the speaker feels that he has been deprived of the two most