could reverberate
Regular verb: reverberate - reverberated- reverberated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could reverberate
you could reverberate
she could reverberate
we could reverberate
you could reverberate
they could reverberate 	I could be reverberating
you could be reverberating
she could be reverberating
we could be reverberating
you could be reverberating
they could be reverberating	I could have reverberated
you could have reverberated
she could have reverberated
we could have reverberated
you could have reverberated
they could have reverberated	I could have been reverberating
you could have been reverberating
she could have been reverberating
we could have been reverberating
you could have been reverberating
they could have been reverberating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not reverberate
you could not reverberate
she could not reverberate
we could not reverberate
you could not reverberate
they could not reverberate 	I could not be reverberating
you could not be reverberating
she could not be reverberating
we could not be reverberating
you could not be reverberating
they could not be reverberating	I could not have reverberated
you could not have reverberated
she could not have reverberated
we could not have reverberated
you could not have reverberated
they could not have reverberated	I could not have been reverberating
you could not have been reverberating
she could not have been reverberating
we could not have been reverberating
you could not have been reverberating
they could not have been reverberating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I reverberate?
could you reverberate?
could she reverberate?
could we reverberate?
could you reverberate?
could they reverberate? 	could I be reverberating?
could you be reverberating?
could she be reverberating?
could we be reverberating?
could you be reverberating?
could they be reverberating? 	could I have reverberated?
could you have reverberated?
could she have reverberated?
could we have reverberated?
could you have reverberated?
could they have reverberated? 	could I have been reverberating?
could you have been reverberating?
could she have been reverberating?
could we have been reverberating?
could you have been reverberating?
could they have been reverberating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not reverberate?
could you not reverberate?
could she not reverberate?
could we not reverberate?
could you not reverberate?
could they not reverberate? 	could I not be reverberating?
could you not be reverberating?
could she not be reverberating?
could we not be reverberating?
could you not be reverberating?
could they not be reverberating? 	could I not have reverberated?
could you not have reverberated?
could she not have reverberated?
could we not have reverberated?
could you not have reverberated?
could they not have reverberated? 	could I not have been reverberating?
could you not have been reverberating?
could she not have been reverberating?
could we not have been reverberating?
could you not have been reverberating?
could they not have been reverberating?