SJ1 glyphs from: Maya Hieroglyphic Database: Catalog. Drawings by Matthew Looper, except codical examples by Martha Macri.

SJ1a #1 BAAK bone

SJ1b #1 BAK captive

SJ1c #1 JO'L head

SJ1c #2 JO'L head

SJ1s #1 ba (syllable)