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