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 dash indicates that connection of the specified type is not possible.
| construct | afterthought logical | forethought logical | afterthought non-logical | forethought non-logical |
| 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 | - |