Regular verb: administer - administered - administered
Affirmation
Simple form
I could administer you could administer he could administer we could administer you could administer they could administer
V-ing form
I could be administering you could be administering he could be administering we could be administering you could be administering they could be administering
Perfect
I could have administered you could have administered he could have administered we could have administered you could have administered they could have administered
V-ing perfect
I could have been administering you could have been administering he could have been administering we could have been administering you could have been administering they could have been administering
Negation
Simple form
I couldn't administer you couldn't administer he couldn't administer we couldn't administer you couldn't administer they couldn't administer
V-ing form
I couldn't be administering you couldn't be administering he couldn't be administering we couldn't be administering you couldn't be administering they couldn't be administering
Perfect
I couldn't have administered you couldn't have administered he couldn't have administered we couldn't have administered you couldn't have administered they couldn't have administered
V-ing perfect
I couldn't have been administering you couldn't have been administering he couldn't have been administering we couldn't have been administering you couldn't have been administering they couldn't have been administering
Interrogative form
Simple form
could I administer? could you administer? could he administer? could we administer? could you administer? could they administer?
V-ing form
could I be administering? could you be administering? could he be administering? could we be administering? could you be administering? could they be administering?
Perfect
could I have administered? could you have administered? could he have administered? could we have administered? could you have administered? could they have administered?
V-ing perfect
could I have been administering? could you have been administering? could he have been administering? could we have been administering? could you have been administering? could they have been administering?
Interro-negative form
Simple form
couldn't I administer? couldn't you administer? couldn't he administer? couldn't we administer? couldn't you administer? couldn't they administer?
V-ing form
couldn't I be administering? couldn't you be administering? couldn't he be administering? couldn't we be administering? couldn't you be administering? couldn't they be administering?
Perfect
couldn't I have administered? couldn't you have administered? couldn't he have administered? couldn't we have administered? couldn't you have administered? couldn't they have administered?
V-ing perfect
couldn't I have been administering? couldn't you have been administering? couldn't he have been administering? couldn't we have been administering? couldn't you have been administering? couldn't they have been administering?