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