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