I could reverberate you could reverberate he could reverberate we could reverberate you could reverberate they could reverberate
V-ing form
I could be reverberating you could be reverberating he could be reverberating we could be reverberating you could be reverberating they could be reverberating
Perfect
I could have reverberated you could have reverberated he could have reverberated we could have reverberated you could have reverberated they could have reverberated
V-ing perfect
I could have been reverberating you could have been reverberating he could have been reverberating we could have been reverberating you could have been reverberating they could have been reverberating
Negation
Simple form
I couldn't reverberate you couldn't reverberate he couldn't reverberate we couldn't reverberate you couldn't reverberate they couldn't reverberate
V-ing form
I couldn't be reverberating you couldn't be reverberating he couldn't be reverberating we couldn't be reverberating you couldn't be reverberating they couldn't be reverberating
Perfect
I couldn't have reverberated you couldn't have reverberated he couldn't have reverberated we couldn't have reverberated you couldn't have reverberated they couldn't have reverberated
V-ing perfect
I couldn't have been reverberating you couldn't have been reverberating he couldn't have been reverberating we couldn't have been reverberating you couldn't have been reverberating they couldn't have been reverberating
Interrogative form
Simple form
could I reverberate? could you reverberate? could he reverberate? could we reverberate? could you reverberate? could they reverberate?
V-ing form
could I be reverberating? could you be reverberating? could he be reverberating? could we be reverberating? could you be reverberating? could they be reverberating?
Perfect
could I have reverberated? could you have reverberated? could he have reverberated? could we have reverberated? could you have reverberated? could they have reverberated?
V-ing perfect
could I have been reverberating? could you have been reverberating? could he have been reverberating? could we have been reverberating? could you have been reverberating? could they have been reverberating?
Interro-negative form
Simple form
couldn't I reverberate? couldn't you reverberate? couldn't he reverberate? couldn't we reverberate? couldn't you reverberate? couldn't they reverberate?
V-ing form
couldn't I be reverberating? couldn't you be reverberating? couldn't he be reverberating? couldn't we be reverberating? couldn't you be reverberating? couldn't they be reverberating?
Perfect
couldn't I have reverberated? couldn't you have reverberated? couldn't he have reverberated? couldn't we have reverberated? couldn't you have reverberated? couldn't they have reverberated?
V-ing perfect
couldn't I have been reverberating? couldn't you have been reverberating? couldn't he have been reverberating? couldn't we have been reverberating? couldn't you have been reverberating? couldn't they have been reverberating?