* Par - The first syllable is stressed, so the vowel "a" is stressed.
* Li - The second syllable is unstressed, so the vowel "i" is unstressed.
* A - The third syllable is unstressed, so the vowel "a" is unstressed.
* Ment - The fourth syllable is stressed, so the vowel "e" (although silent) is stressed.
Therefore, the unstressed vowels in "parliament" are "i" and "a".