SS1 glyphs from: Maya Hieroglyphic Database: Catalog. Drawings by Matthew Looper, except codical examples by Martha Macri.

SS1a #1 HUXLAJUUN thirteen, number (head variant) 13

SS1b #1 HA'B tun, year, period: 360 days, tun

SS1b #2 HA'B tun, year, period: 360 days, tun