On type:
- abu
- letteral for a.
- canlu bu
- space (character)
- claxu bu
- letteral: ellipsis mark (letteral).
- dac bu
- letteral: dash (letteral).
- denpa bu
- letteral: Lojban "." character.
- du'u bu
- the last sumti having a {du'u}-abstraction at its topmost level inside
- ebu
- letteral for e.
- epsi bu
- digit/number: dual ε of dual number in linear algebra; square root of 0
- gi bu
- pro-sumti: in the second half of a sumti forethought connective expression, refers to the first half.
- gimet bu
- letteral: guillemet (letteral).
- ibu
- letteral for i.
- joibu
- letteral: ampersand character; especially used in standing for a mixed connective.
- jorne bu
- letteral: hyphen (letteral).
- ka bu
- the last sumti having a {ka}-abstraction at its topmost level inside
- kolon bu
- letteral: colon (letteral).
- ky.bu
- Letteral: “q” character
- lu bu
- pro-sumti: refers to the last complete {lu}-quotation
- ni bu
- the last sumti having a {ni}-abstraction at its topmost level inside
- nu bu
- pro-sumti: refers to the last complete sumti that started with a nu-abstraction
- obu
- letteral for o.
- paubu
- letteral: '?' symbol
- ronru'u bu
- letteral: euro coinage sign (letteral).
- saibu
- letteral: '!' symbol
- semikolon bu
- letteral: semicolon (letteral).
- sitna bu
- letteral: quotation mark (letteral).
- slac bu
- letteral: slash (letteral).
- slaka bu
- letteral: Lojban ',' character.
- ubu
- letteral for u.
- uibu
- letteral: happiness symbol (letteral).
- veibu
- letteral: left bracket (letteral).
- ve'obu
- letteral: right bracket (letteral).
- vy.bu
- Letteral: “w” character
- xy.bu
- letteral for "h" character
- ybu
- letteral for y.
- y'y.bu
- letteral for "h" character
- zo'obu
- letteral: humor symbol, ':-)' and its related forms expressing humor (letteral).