English verb conjugation
COULD GARDEN

Regular verb: garden - gardened - gardened

Affirmation

Simple form	V-ing form
I could garden you could garden she could garden we could garden you could garden they could garden	I could be gardening you could be gardening she could be gardening we could be gardening you could be gardening they could be gardening
Perfect	V-ing perfect
I could have gardened you could have gardened she could have gardened we could have gardened you could have gardened they could have gardened	I could have been gardening you could have been gardening she could have been gardening we could have been gardening you could have been gardening they could have been gardening

Negation

Simple form	V-ing form
I could not garden you could not garden she could not garden we could not garden you could not garden they could not garden	I could not be gardening you could not be gardening she could not be gardening we could not be gardening you could not be gardening they could not be gardening
Perfect	V-ing perfect
I could not have gardened you could not have gardened she could not have gardened we could not have gardened you could not have gardened they could not have gardened	I could not have been gardening you could not have been gardening she could not have been gardening we could not have been gardening you could not have been gardening they could not have been gardening

Interrogative form

Simple form	V-ing form
could I garden? could you garden? could she garden? could we garden? could you garden? could they garden?	could I be gardening? could you be gardening? could she be gardening? could we be gardening? could you be gardening? could they be gardening?
Perfect	V-ing perfect
could I have gardened? could you have gardened? could she have gardened? could we have gardened? could you have gardened? could they have gardened?	could I have been gardening? could you have been gardening? could she have been gardening? could we have been gardening? could you have been gardening? could they have been gardening?

Interro-negative form

Simple form	V-ing form
could I not garden? could you not garden? could she not garden? could we not garden? could you not garden? could they not garden?	could I not be gardening? could you not be gardening? could she not be gardening? could we not be gardening? could you not be gardening? could they not be gardening?
Perfect	V-ing perfect
could I not have gardened? could you not have gardened? could she not have gardened? could we not have gardened? could you not have gardened? could they not have gardened?	could I not have been gardening? could you not have been gardening? could she not have been gardening? could we not have been gardening? could you not have been gardening? could they not have been gardening?