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