English verb conjugation
COULD DON

Regular verb: don - donned - donned

Affirmation

Simple form	V-ing form
I could don you could don she could don we could don you could don they could don	I could be donning you could be donning she could be donning we could be donning you could be donning they could be donning
Perfect	V-ing perfect
I could have donned you could have donned she could have donned we could have donned you could have donned they could have donned	I could have been donning you could have been donning she could have been donning we could have been donning you could have been donning they could have been donning

Negation

Simple form	V-ing form
I couldn't don you couldn't don she couldn't don we couldn't don you couldn't don they couldn't don	I couldn't be donning you couldn't be donning she couldn't be donning we couldn't be donning you couldn't be donning they couldn't be donning
Perfect	V-ing perfect
I couldn't have donned you couldn't have donned she couldn't have donned we couldn't have donned you couldn't have donned they couldn't have donned	I couldn't have been donning you couldn't have been donning she couldn't have been donning we couldn't have been donning you couldn't have been donning they couldn't have been donning

Interrogative form

Simple form	V-ing form
could I don? could you don? could she don? could we don? could you don? could they don?	could I be donning? could you be donning? could she be donning? could we be donning? could you be donning? could they be donning?
Perfect	V-ing perfect
could I have donned? could you have donned? could she have donned? could we have donned? could you have donned? could they have donned?	could I have been donning? could you have been donning? could she have been donning? could we have been donning? could you have been donning? could they have been donning?

Interro-negative form

Simple form	V-ing form
couldn't I don? couldn't you don? couldn't she don? couldn't we don? couldn't you don? couldn't they don?	couldn't I be donning? couldn't you be donning? couldn't she be donning? couldn't we be donning? couldn't you be donning? couldn't they be donning?
Perfect	V-ing perfect
couldn't I have donned? couldn't you have donned? couldn't she have donned? couldn't we have donned? couldn't you have donned? couldn't they have donned?	couldn't I have been donning? couldn't you have been donning? couldn't she have been donning? couldn't we have been donning? couldn't you have been donning? couldn't they have been donning?