1. In all except perhaps, these are falling diphthongs . 2. Spanish has six falling diphthongs and eight rising diphthongs. 3. Furthermore, there are no minimal pairs that distinguish a hiatus from a falling diphthong in unstressed syllables. 4. Additionally, some vowels are realized as falling diphthongs , as in ('arm, sleeve'). 5. Iota participated as the second element in falling diphthongs , with both long and short vowels as the first element. 6. On the other hand, " ui " remained in Exilic Quenya a falling diphthong as reported ". 7. In the majority of accents, however, the falling diphthong turned into a rising diphthong, which became the sequence. 8. Unlike the other falling diphthongs ( that is, falling from higher to lower sonority ), and are rising diphthongs. 9. During the early Old French period, it was pronounced as the writing suggests, as as a falling diphthong :. 10. The three falling diphthongs end with a less prominent front vowel / i /, but begin with a more prominent vowel.