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