nanauhtetl. de quatro en quatro, o acada yno quatro. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 063r. col. 1. Thanks to Joe Campbell for providing the transcription.
Frances Karttunen:
NĀNĀUHTE-TL by fours, four apiece / de cuatro en cuatro, o a cada uno cuatro (M) [(1)Tp.168]. This attestation is affixed with the diminutive -TZIN, and T glosses it as poquito. redup. NĀUHTE-TL Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 159.