Dr. Seuss often used adjacent rhymes. In other words, the rhyming lines were next to each other. There are many poetic forms that have very different rhyme schemes than rhymed couplets or other adjacent rhyme. You can also make up a new form that uses non-adjacent rhyme. Try some of the following: abab cdcd, abcdefgabcdefg, abcabcabc, or abba.