The following table specifies, for each kind of construct that can be logically or non-logically connected in Lojban, what kind of connective is required for both afterthought and (when possible) forethought modes. An asterisk (*) indicates that tensed connection is permitted.
A line of dashes indicates that connection of the specified type is not possible.
construct afterth. foreth. afterth. foreth.
logical logical non-log. non-log.
--------- ------- ------- -------- --------
bridi ijek* gek ijoik* joigik
sumti ek* gek joik* joigik
bridi-tails gihek* gek — joigik
termsets ek* gek joik* joigik
tanru parts jek guhek joik* ---
operands ek* gek joik* joigik
operators jek guhek joik ---
tenses/modals jek — joik ---
abstractors jek — joik ---