cecempoalli/cecempoaltetl. de veinte en veinte, o cada vno veinte. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 15r. col. 2. Thanks to Joe Campbell for providing the transcription.
Frances Karttunen:
CĒCEMPŌHUAL-LI by twenties, twenty apiece, in lost of twenty / de veinte en veinte, o cada uno veinte (M) redup. CEMPŌHUAL-LI. Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 27.