to compile reasons in favor of something (see Molina, cecentlalia)
IPAspelling:
sehseːpɑnoɑː
Alonso de Molina:
cecepanoa. nic. (pret. oniccecepano.) lo mesmo es que cecentlalia. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 15v. col. 1. Thanks to Joe Campbell for providing the transcription.
Frances Karttunen:
CEHCĒPANOĀ vt to unite, to put something together / ayuntar o recoger razones en favor de algún negocio (M), juntar (R) [(1)Rp.68]. R indicates the glottal stop but fails to mark the vowel of the second syllable long. See CĒPAN. Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 28.