11. In English accentual -syllabic verse, iambic trimeter is a line comprising three iambs. 12. The final section of the book presents a new system of prosody for accentual verse. 13. As in accentual -syllabic verse, there is some flexibility in how one counts syllables. 14. The shift can happen following nivellation of the two accents, a loss of accentual contrast. 15. The classical terms were adapted to describe the equivalent meters in English accentual -syllabic verse. 16. Accentual mobility is prominent in nominal stems, while verbal stems mostly demonstrate phonologically predictable patterns.17. In English accentual -syllabic poetry, an amphibrach is a stressed syllable surrounded by two unstressed syllables. 18. Accentual alternations in inflectional paradigms ( both verbal and nominal ) are also retained in Balto-Slavic.19. Regardless of vernacular differences, all three standard languages exclusively promote the Neo-Shtokavian four-accentual system. 20. It has often been hypothesized that the accentual distinctions were first converted into length distinctions, as in below.