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