Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I could bring sth you could bring sth he could bring sth we could bring sth you could bring sth they could bring sth
V-ing form
I could be bring sthing you could be bring sthing he could be bring sthing we could be bring sthing you could be bring sthing they could be bring sthing
Perfect
I could have bring sthed you could have bring sthed he could have bring sthed we could have bring sthed you could have bring sthed they could have bring sthed
V-ing perfect
I could have been bring sthing you could have been bring sthing he could have been bring sthing we could have been bring sthing you could have been bring sthing they could have been bring sthing
Negation
Simple form
I couldn't bring sth you couldn't bring sth he couldn't bring sth we couldn't bring sth you couldn't bring sth they couldn't bring sth
V-ing form
I couldn't be bring sthing you couldn't be bring sthing he couldn't be bring sthing we couldn't be bring sthing you couldn't be bring sthing they couldn't be bring sthing
Perfect
I couldn't have bring sthed you couldn't have bring sthed he couldn't have bring sthed we couldn't have bring sthed you couldn't have bring sthed they couldn't have bring sthed
V-ing perfect
I couldn't have been bring sthing you couldn't have been bring sthing he couldn't have been bring sthing we couldn't have been bring sthing you couldn't have been bring sthing they couldn't have been bring sthing
Interrogative form
Simple form
could I bring sth? could you bring sth? could he bring sth? could we bring sth? could you bring sth? could they bring sth?
V-ing form
could I be bring sthing? could you be bring sthing? could he be bring sthing? could we be bring sthing? could you be bring sthing? could they be bring sthing?
Perfect
could I have bring sthed? could you have bring sthed? could he have bring sthed? could we have bring sthed? could you have bring sthed? could they have bring sthed?
V-ing perfect
could I have been bring sthing? could you have been bring sthing? could he have been bring sthing? could we have been bring sthing? could you have been bring sthing? could they have been bring sthing?
Interro-negative form
Simple form
couldn't I bring sth? couldn't you bring sth? couldn't he bring sth? couldn't we bring sth? couldn't you bring sth? couldn't they bring sth?
V-ing form
couldn't I be bring sthing? couldn't you be bring sthing? couldn't he be bring sthing? couldn't we be bring sthing? couldn't you be bring sthing? couldn't they be bring sthing?
Perfect
couldn't I have bring sthed? couldn't you have bring sthed? couldn't he have bring sthed? couldn't we have bring sthed? couldn't you have bring sthed? couldn't they have bring sthed?
V-ing perfect
couldn't I have been bring sthing? couldn't you have been bring sthing? couldn't he have been bring sthing? couldn't we have been bring sthing? couldn't you have been bring sthing? couldn't they have been bring sthing?