could liven
Regular verb: liven - livened- livened

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could liven
you could liven
she could liven
we could liven
you could liven
they could liven 	I could be livening
you could be livening
she could be livening
we could be livening
you could be livening
they could be livening	I could have livened
you could have livened
she could have livened
we could have livened
you could have livened
they could have livened	I could have been livening
you could have been livening
she could have been livening
we could have been livening
you could have been livening
they could have been livening	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not liven
you could not liven
she could not liven
we could not liven
you could not liven
they could not liven 	I could not be livening
you could not be livening
she could not be livening
we could not be livening
you could not be livening
they could not be livening	I could not have livened
you could not have livened
she could not have livened
we could not have livened
you could not have livened
they could not have livened	I could not have been livening
you could not have been livening
she could not have been livening
we could not have been livening
you could not have been livening
they could not have been livening	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I liven?
could you liven?
could she liven?
could we liven?
could you liven?
could they liven? 	could I be livening?
could you be livening?
could she be livening?
could we be livening?
could you be livening?
could they be livening? 	could I have livened?
could you have livened?
could she have livened?
could we have livened?
could you have livened?
could they have livened? 	could I have been livening?
could you have been livening?
could she have been livening?
could we have been livening?
could you have been livening?
could they have been livening? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not liven?
could you not liven?
could she not liven?
could we not liven?
could you not liven?
could they not liven? 	could I not be livening?
could you not be livening?
could she not be livening?
could we not be livening?
could you not be livening?
could they not be livening? 	could I not have livened?
could you not have livened?
could she not have livened?
could we not have livened?
could you not have livened?
could they not have livened? 	could I not have been livening?
could you not have been livening?
could she not have been livening?
could we not have been livening?
could you not have been livening?
could they not have been livening?