Editing Maranao language (section)

===Vowels===
Maranao has four vowel phonemes that can become more close or higher when in certain environments (see hard consonants below).<ref name="Lobel and Riwarung 2009b" /> The vowel raising effects of hard consonants may have led earlier studies to Although previous studies have analyzed the {{IPA|[ɨ]}} sound as a separate phoneme (written with ''ae'') instead of a raised allophone of {{IPA|/ə/}}.
{| class="wikitable"
|+caption |
Vowels<ref name="Lobel and Riwarung 2009b" />
|- style="text-align:center;"
! 
! [[Front vowel|Front]]
! [[Central vowel|Central]]
! [[Back vowel|Back]]
|- style="text-align:center;"
![[Close vowel|Close]]
| /{{IPA link|i}}/
[{{IPA link|ɪ}} ~ {{IPA link|i}}]
|
| 
|- style="text-align:center;"
! [[Mid vowel|Mid]]
| 
| /{{IPA link|ə}}/
[{{IPA link|ə}} ~ {{IPA link|ɨ}}]
| /{{IPA link|o}}/
[{{IPA link|o}} ~ {{IPA link|u}}]
|- style="text-align:center;"
! [[Open vowel|Open]]
|
| /{{IPA link|a}}/
[{{IPA link|a}} ~ {{IPA link|ɤ}}]
| 
|}

Vowel [e] only occurs in loanwords from Spanish through Tagalog or Cebuano and from Malay.