Complex sentence: On the other hand, simple and mixed diphthongs starting in "a" and "e" are clearly differentiated in the standard language in that the first part of the diphthong becomes longer and more tense under the acute accent.
Split into simpler sentences: On the other hand, simple and mixed diphthongs starting in "a" and "e" are clearly differentiated in the standard language. The first part of the diphthong becomes longer and more tense under the acute accent.