Additional accents beyond the two mandatory ones provide rhythmic variation and allow the poet to express thematic effects. A line in which accents fall consistently on even-numbered syllables (""Al còr gentìl rempàira sèmpre amóre"") is called iambic ("giambico") and may be a greater or lesser hendecasyllable. This line is the simplest, commonest and most musical but may become repetitive, especially in longer works. Lesser hendecasyllables often have an accent on the seventh syllable (""fàtta di giòco in figùra d'amóre""). Such a line is called dactylic ("dattilico") and its less pronounced rhythm is considered particularly appropriate for representing dialogue. Another kind of greater hendecasyllable has an accent on the third syllable (""Se Mercé fosse amìca a' miei disìri"") and is known as anapestic ("anapestico"). This sort of line has a crescendo effect and gives the poem a sense of speed and fluidity.