could decline
Regular verb: decline - declined- declined

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could decline
you could decline
she could decline
we could decline
you could decline
they could decline 	I could be declining
you could be declining
she could be declining
we could be declining
you could be declining
they could be declining	I could have declined
you could have declined
she could have declined
we could have declined
you could have declined
they could have declined	I could have been declining
you could have been declining
she could have been declining
we could have been declining
you could have been declining
they could have been declining	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not decline
you could not decline
she could not decline
we could not decline
you could not decline
they could not decline 	I could not be declining
you could not be declining
she could not be declining
we could not be declining
you could not be declining
they could not be declining	I could not have declined
you could not have declined
she could not have declined
we could not have declined
you could not have declined
they could not have declined	I could not have been declining
you could not have been declining
she could not have been declining
we could not have been declining
you could not have been declining
they could not have been declining	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I decline?
could you decline?
could she decline?
could we decline?
could you decline?
could they decline? 	could I be declining?
could you be declining?
could she be declining?
could we be declining?
could you be declining?
could they be declining? 	could I have declined?
could you have declined?
could she have declined?
could we have declined?
could you have declined?
could they have declined? 	could I have been declining?
could you have been declining?
could she have been declining?
could we have been declining?
could you have been declining?
could they have been declining? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not decline?
could you not decline?
could she not decline?
could we not decline?
could you not decline?
could they not decline? 	could I not be declining?
could you not be declining?
could she not be declining?
could we not be declining?
could you not be declining?
could they not be declining? 	could I not have declined?
could you not have declined?
could she not have declined?
could we not have declined?
could you not have declined?
could they not have declined? 	could I not have been declining?
could you not have been declining?
could she not have been declining?
could we not have been declining?
could you not have been declining?
could they not have been declining?