Yatzachi Zapotec has six vowels. The a, e, and i are the same as these vowels in Spanish. In earlier forms of Zapotec, there was a sound between o and u, which in the case of Yatzachi Zapotec was closer to the o sound, but in other Zapotec dialects was more of a u sound. In the modern Yatzachi dialect, both the o and the u sound exist, although the u is only found in Spanish loanwords.
