The English sonnet differs from the Italian in that it is divided into three quatrains, each rhymed differently, with an independently rhymed couplet at the end. The rhyme scheme of the English sonnet is ABAB, CDCD, EFEF, GG. Each quatrain takes a different appearance of the idea or develops a different image to express the theme. Except for a few early poems, all of Shakespeare's sonnets were in this form.