Phonology
There is a maximum of 9 oral vowels and 19 consonants, though some varieties of the language have fewer phonemes (Brazilian Portuguese is usually analyzed as having 8 oral vowels). There are also five nasal vowels, which some linguists regard as allophones of the oral vowels, ten oral diphthongs, and five nasal diphthongs. In total, Brazilian Portuguese has 13 vowel phonemes.
Read more about this topic: Portuguese Language