I could blubber you could blubber she could blubber we could blubber you could blubber they could blubber
V-ing form
I could be blubbering you could be blubbering she could be blubbering we could be blubbering you could be blubbering they could be blubbering
Perfect
I could have blubbered you could have blubbered she could have blubbered we could have blubbered you could have blubbered they could have blubbered
V-ing perfect
I could have been blubbering you could have been blubbering she could have been blubbering we could have been blubbering you could have been blubbering they could have been blubbering
Negation
Simple form
I couldn't blubber you couldn't blubber she couldn't blubber we couldn't blubber you couldn't blubber they couldn't blubber
V-ing form
I couldn't be blubbering you couldn't be blubbering she couldn't be blubbering we couldn't be blubbering you couldn't be blubbering they couldn't be blubbering
Perfect
I couldn't have blubbered you couldn't have blubbered she couldn't have blubbered we couldn't have blubbered you couldn't have blubbered they couldn't have blubbered
V-ing perfect
I couldn't have been blubbering you couldn't have been blubbering she couldn't have been blubbering we couldn't have been blubbering you couldn't have been blubbering they couldn't have been blubbering
Interrogative form
Simple form
could I blubber? could you blubber? could she blubber? could we blubber? could you blubber? could they blubber?
V-ing form
could I be blubbering? could you be blubbering? could she be blubbering? could we be blubbering? could you be blubbering? could they be blubbering?
Perfect
could I have blubbered? could you have blubbered? could she have blubbered? could we have blubbered? could you have blubbered? could they have blubbered?
V-ing perfect
could I have been blubbering? could you have been blubbering? could she have been blubbering? could we have been blubbering? could you have been blubbering? could they have been blubbering?
Interro-negative form
Simple form
couldn't I blubber? couldn't you blubber? couldn't she blubber? couldn't we blubber? couldn't you blubber? couldn't they blubber?
V-ing form
couldn't I be blubbering? couldn't you be blubbering? couldn't she be blubbering? couldn't we be blubbering? couldn't you be blubbering? couldn't they be blubbering?
Perfect
couldn't I have blubbered? couldn't you have blubbered? couldn't she have blubbered? couldn't we have blubbered? couldn't you have blubbered? couldn't they have blubbered?
V-ing perfect
couldn't I have been blubbering? couldn't you have been blubbering? couldn't she have been blubbering? couldn't we have been blubbering? couldn't you have been blubbering? couldn't they have been blubbering?