matlatlac ilhuitl onnanahuitica.

Headword: 
matlatlac ilhuitl onnanahuitica.
Principal English Translation: 

of fourteen by fourteen days (see Molina)

Orthographic Variants: 
matlatlac ilhuitl onnanauitica
Alonso de Molina: 

matlatlac ilhuitl onnanauitica. de catorze en catorze dias.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 53v. col. 1. Thanks to Joe Campbell for providing the transcription.