I could spancel you could spancel she could spancel we could spancel you could spancel they could spancel
V-ing form
I could be spanceling you could be spanceling she could be spanceling we could be spanceling you could be spanceling they could be spanceling
Perfect
I could have spanceled you could have spanceled she could have spanceled we could have spanceled you could have spanceled they could have spanceled
V-ing perfect
I could have been spanceling you could have been spanceling she could have been spanceling we could have been spanceling you could have been spanceling they could have been spanceling
Negation
Simple form
I could not spancel you could not spancel she could not spancel we could not spancel you could not spancel they could not spancel
V-ing form
I could not be spanceling you could not be spanceling she could not be spanceling we could not be spanceling you could not be spanceling they could not be spanceling
Perfect
I could not have spanceled you could not have spanceled she could not have spanceled we could not have spanceled you could not have spanceled they could not have spanceled
V-ing perfect
I could not have been spanceling you could not have been spanceling she could not have been spanceling we could not have been spanceling you could not have been spanceling they could not have been spanceling
Interrogative form
Simple form
could I spancel? could you spancel? could she spancel? could we spancel? could you spancel? could they spancel?
V-ing form
could I be spanceling? could you be spanceling? could she be spanceling? could we be spanceling? could you be spanceling? could they be spanceling?
Perfect
could I have spanceled? could you have spanceled? could she have spanceled? could we have spanceled? could you have spanceled? could they have spanceled?
V-ing perfect
could I have been spanceling? could you have been spanceling? could she have been spanceling? could we have been spanceling? could you have been spanceling? could they have been spanceling?
Interro-negative form
Simple form
could I not spancel? could you not spancel? could she not spancel? could we not spancel? could you not spancel? could they not spancel?
V-ing form
could I not be spanceling? could you not be spanceling? could she not be spanceling? could we not be spanceling? could you not be spanceling? could they not be spanceling?
Perfect
could I not have spanceled? could you not have spanceled? could she not have spanceled? could we not have spanceled? could you not have spanceled? could they not have spanceled?
V-ing perfect
could I not have been spanceling? could you not have been spanceling? could she not have been spanceling? could we not have been spanceling? could you not have been spanceling? could they not have been spanceling?