oco yehua.

Headword: 
oco yehua.
Principal English Translation: 

in older times, in days of the past (see Molina)

Orthographic Variants: 
oco yeua
Alonso de Molina: 

oco yeua. en tiempos passados, o los dias passados.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 75v. col. 1. Thanks to Joe Campbell for providing the transcription.