Maijiki language

Maijiki, also Coto, Maijuna, 'Orejón', or Máíhɨ̃ki, is a moribund Tucanoan language of Peru.

Writing system

The letters can also be written as in the National Register of Identity and Civil Status of Peru.
Nasal vowels have an underlined stroke and tones are indicated using diacritics:

low-tone vowels with the grave accent ;
high-tone vowels with the acute accent ;
low-tone nasal vowels with the macron below and grave accent ;
high-tone nasal vowels with the macron below and acute accent.