Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I could dialogue you could dialogue he could dialogue we could dialogue you could dialogue they could dialogue
V-ing form
I could be dialoguing you could be dialoguing he could be dialoguing we could be dialoguing you could be dialoguing they could be dialoguing
Perfect
I could have dialogued you could have dialogued he could have dialogued we could have dialogued you could have dialogued they could have dialogued
V-ing perfect
I could have been dialoguing you could have been dialoguing he could have been dialoguing we could have been dialoguing you could have been dialoguing they could have been dialoguing
Negation
Simple form
I could not dialogue you could not dialogue he could not dialogue we could not dialogue you could not dialogue they could not dialogue
V-ing form
I could not be dialoguing you could not be dialoguing he could not be dialoguing we could not be dialoguing you could not be dialoguing they could not be dialoguing
Perfect
I could not have dialogued you could not have dialogued he could not have dialogued we could not have dialogued you could not have dialogued they could not have dialogued
V-ing perfect
I could not have been dialoguing you could not have been dialoguing he could not have been dialoguing we could not have been dialoguing you could not have been dialoguing they could not have been dialoguing
Interrogative form
Simple form
could I dialogue? could you dialogue? could he dialogue? could we dialogue? could you dialogue? could they dialogue?
V-ing form
could I be dialoguing? could you be dialoguing? could he be dialoguing? could we be dialoguing? could you be dialoguing? could they be dialoguing?
Perfect
could I have dialogued? could you have dialogued? could he have dialogued? could we have dialogued? could you have dialogued? could they have dialogued?
V-ing perfect
could I have been dialoguing? could you have been dialoguing? could he have been dialoguing? could we have been dialoguing? could you have been dialoguing? could they have been dialoguing?
Interro-negative form
Simple form
could I not dialogue? could you not dialogue? could he not dialogue? could we not dialogue? could you not dialogue? could they not dialogue?
V-ing form
could I not be dialoguing? could you not be dialoguing? could he not be dialoguing? could we not be dialoguing? could you not be dialoguing? could they not be dialoguing?
Perfect
could I not have dialogued? could you not have dialogued? could he not have dialogued? could we not have dialogued? could you not have dialogued? could they not have dialogued?
V-ing perfect
could I not have been dialoguing? could you not have been dialoguing? could he not have been dialoguing? could we not have been dialoguing? could you not have been dialoguing? could they not have been dialoguing?