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