I could dialog you could dialog he could dialog we could dialog you could dialog they could dialog
V-ing form
I could be dialoging you could be dialoging he could be dialoging we could be dialoging you could be dialoging they could be dialoging
Perfect
I could have dialoged you could have dialoged he could have dialoged we could have dialoged you could have dialoged they could have dialoged
V-ing perfect
I could have been dialoging you could have been dialoging he could have been dialoging we could have been dialoging you could have been dialoging they could have been dialoging
Negation
Simple form
I couldn't dialog you couldn't dialog he couldn't dialog we couldn't dialog you couldn't dialog they couldn't dialog
V-ing form
I couldn't be dialoging you couldn't be dialoging he couldn't be dialoging we couldn't be dialoging you couldn't be dialoging they couldn't be dialoging
Perfect
I couldn't have dialoged you couldn't have dialoged he couldn't have dialoged we couldn't have dialoged you couldn't have dialoged they couldn't have dialoged
V-ing perfect
I couldn't have been dialoging you couldn't have been dialoging he couldn't have been dialoging we couldn't have been dialoging you couldn't have been dialoging they couldn't have been dialoging
Interrogative form
Simple form
could I dialog? could you dialog? could he dialog? could we dialog? could you dialog? could they dialog?
V-ing form
could I be dialoging? could you be dialoging? could he be dialoging? could we be dialoging? could you be dialoging? could they be dialoging?
Perfect
could I have dialoged? could you have dialoged? could he have dialoged? could we have dialoged? could you have dialoged? could they have dialoged?
V-ing perfect
could I have been dialoging? could you have been dialoging? could he have been dialoging? could we have been dialoging? could you have been dialoging? could they have been dialoging?
Interro-negative form
Simple form
couldn't I dialog? couldn't you dialog? couldn't he dialog? couldn't we dialog? couldn't you dialog? couldn't they dialog?
V-ing form
couldn't I be dialoging? couldn't you be dialoging? couldn't he be dialoging? couldn't we be dialoging? couldn't you be dialoging? couldn't they be dialoging?
Perfect
couldn't I have dialoged? couldn't you have dialoged? couldn't he have dialoged? couldn't we have dialoged? couldn't you have dialoged? couldn't they have dialoged?
V-ing perfect
couldn't I have been dialoging? couldn't you have been dialoging? couldn't he have been dialoging? couldn't we have been dialoging? couldn't you have been dialoging? couldn't they have been dialoging?