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