On grammatical class:
- abu
- letteral for a.
- denpa bu
- letteral: Lojban "." character.
- ebu
- letteral for e.
- ibu
- letteral for i.
- joibu
- letteral: ampersand character; especially used in standing for a mixed connective.
- obu
- letteral for o.
- slaka bu
- letteral: Lojban "," character.
- ubu
- letteral for u.
- uibu
- letteral: happiness symbol (letteral).
- ybu
- letteral for y.
- zo'obu
- letteral: humor symbol, ":-)" and its related forms expressing humor (letteral).