What elements of ballad structure appear? the first and third lines rhyme and have the same number of syllables. the second and fourth lines rhyme and have the same number of syllables.

In a traditional ballad, the second and fourth lines of each stanza rhyme and have the same number of syllables. This adds to the lyrical, song-like nature of the poem. In these two examples, this ballad form is shown.

In the first, the words "home" (at the end of the second line) and "dome" (at the end of the fourth line) rhyme, and both lines have 7 syllables. 

In the second example, the words "me" (at the end of the second line) and "immorality" (at the end of the fourth line) rhyme, and both lines have 6 syllables.