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