could garden
Regular verb: garden - gardened- gardened

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