These letters show in which the rhymes happen at the end of the lines. In ABAB, the very first and third traces rhyme at the end, as do the second and fourth lines. In ABCB, just the 2nd and fourth strains rhyme at the tip. But, additional generally, they use https://types-of-sticker25803.azzablog.com/27396409/the-ultimate-guide-to-types-of-rhymes-in-poems