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