ZC1 glyphs from: Maya Hieroglyphic Database: Catalog. Drawings by Matthew Looper, except codical examples by Martha Macri.

ZC1a #1 TUUN stone

ZC1a #2 TUUN stone

ZC1a #3 TUUN stone

ZC1b #1 ? day 19: Kawak

ZC1b #2 ? day 19: Kawak

ZC1b #3 ? day 19: Kawak

ZC1s #1 ku (syllable)

ZC1s #2 ku (syllable)

ZC1s #3 ku (syllable)

ZC1s #4 ku (syllable)