ŌPŌCH-TLI left, left-hand side / izquierdo (Z) There is inconsistency across sources in vowel length marking. In a single entry in B both vowels of the stem are long; in three out of four attestations in C only the first vowel is marked long, with both vowels unmarked in the fourth attestation. Z consistently leaves the first vowel unmarked and twice out of six times marks the second long. M's alternative spelling opuch suggests a long second vowel, but M is not consistent in using this convention only for long Ō. Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 179.