could asseverate
Regular verb: asseverate - asseverated- asseverated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could asseverate
you could asseverate
she could asseverate
we could asseverate
you could asseverate
they could asseverate 	I could be asseverating
you could be asseverating
she could be asseverating
we could be asseverating
you could be asseverating
they could be asseverating	I could have asseverated
you could have asseverated
she could have asseverated
we could have asseverated
you could have asseverated
they could have asseverated	I could have been asseverating
you could have been asseverating
she could have been asseverating
we could have been asseverating
you could have been asseverating
they could have been asseverating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not asseverate
you could not asseverate
she could not asseverate
we could not asseverate
you could not asseverate
they could not asseverate 	I could not be asseverating
you could not be asseverating
she could not be asseverating
we could not be asseverating
you could not be asseverating
they could not be asseverating	I could not have asseverated
you could not have asseverated
she could not have asseverated
we could not have asseverated
you could not have asseverated
they could not have asseverated	I could not have been asseverating
you could not have been asseverating
she could not have been asseverating
we could not have been asseverating
you could not have been asseverating
they could not have been asseverating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I asseverate?
could you asseverate?
could she asseverate?
could we asseverate?
could you asseverate?
could they asseverate? 	could I be asseverating?
could you be asseverating?
could she be asseverating?
could we be asseverating?
could you be asseverating?
could they be asseverating? 	could I have asseverated?
could you have asseverated?
could she have asseverated?
could we have asseverated?
could you have asseverated?
could they have asseverated? 	could I have been asseverating?
could you have been asseverating?
could she have been asseverating?
could we have been asseverating?
could you have been asseverating?
could they have been asseverating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not asseverate?
could you not asseverate?
could she not asseverate?
could we not asseverate?
could you not asseverate?
could they not asseverate? 	could I not be asseverating?
could you not be asseverating?
could she not be asseverating?
could we not be asseverating?
could you not be asseverating?
could they not be asseverating? 	could I not have asseverated?
could you not have asseverated?
could she not have asseverated?
could we not have asseverated?
could you not have asseverated?
could they not have asseverated? 	could I not have been asseverating?
could you not have been asseverating?
could she not have been asseverating?
could we not have been asseverating?
could you not have been asseverating?
could they not have been asseverating?