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