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