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