The most recurrent pattern on geometric tunics alternates stepped frets and profile faces. (a) Doubled band; (b) tunic (BMA 86.224.144).
Isbell, William H.; Uribe, Mauricio I.; Tiballi, Anne; Edward P. Zegarra, 2018, "Visual database", https://doi.org/10.25346/S6/1B33FN.