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