ĪXACA face down / boca abajo, invertido (Z) This is abundantly attested in Z and also appears in X. In one attestation the vowel of de second syllable is marked long, and in three the vowel of the third syllable is marked long, but otherwise Z is consistent. See ĪX-TLI. Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 110.