I could prompt you could prompt she could prompt we could prompt you could prompt they could prompt
V-ing form
I could be prompting you could be prompting she could be prompting we could be prompting you could be prompting they could be prompting
Perfect
I could have prompted you could have prompted she could have prompted we could have prompted you could have prompted they could have prompted
V-ing perfect
I could have been prompting you could have been prompting she could have been prompting we could have been prompting you could have been prompting they could have been prompting
Negation
Simple form
I couldn't prompt you couldn't prompt she couldn't prompt we couldn't prompt you couldn't prompt they couldn't prompt
V-ing form
I couldn't be prompting you couldn't be prompting she couldn't be prompting we couldn't be prompting you couldn't be prompting they couldn't be prompting
Perfect
I couldn't have prompted you couldn't have prompted she couldn't have prompted we couldn't have prompted you couldn't have prompted they couldn't have prompted
V-ing perfect
I couldn't have been prompting you couldn't have been prompting she couldn't have been prompting we couldn't have been prompting you couldn't have been prompting they couldn't have been prompting
Interrogative form
Simple form
could I prompt? could you prompt? could she prompt? could we prompt? could you prompt? could they prompt?
V-ing form
could I be prompting? could you be prompting? could she be prompting? could we be prompting? could you be prompting? could they be prompting?
Perfect
could I have prompted? could you have prompted? could she have prompted? could we have prompted? could you have prompted? could they have prompted?
V-ing perfect
could I have been prompting? could you have been prompting? could she have been prompting? could we have been prompting? could you have been prompting? could they have been prompting?
Interro-negative form
Simple form
couldn't I prompt? couldn't you prompt? couldn't she prompt? couldn't we prompt? couldn't you prompt? couldn't they prompt?
V-ing form
couldn't I be prompting? couldn't you be prompting? couldn't she be prompting? couldn't we be prompting? couldn't you be prompting? couldn't they be prompting?
Perfect
couldn't I have prompted? couldn't you have prompted? couldn't she have prompted? couldn't we have prompted? couldn't you have prompted? couldn't they have prompted?
V-ing perfect
couldn't I have been prompting? couldn't you have been prompting? couldn't she have been prompting? couldn't we have been prompting? couldn't you have been prompting? couldn't they have been prompting?