I could accent you could accent he could accent we could accent you could accent they could accent
V-ing form
I could be accenting you could be accenting he could be accenting we could be accenting you could be accenting they could be accenting
Perfect
I could have accented you could have accented he could have accented we could have accented you could have accented they could have accented
V-ing perfect
I could have been accenting you could have been accenting he could have been accenting we could have been accenting you could have been accenting they could have been accenting
Negation
Simple form
I could not accent you could not accent he could not accent we could not accent you could not accent they could not accent
V-ing form
I could not be accenting you could not be accenting he could not be accenting we could not be accenting you could not be accenting they could not be accenting
Perfect
I could not have accented you could not have accented he could not have accented we could not have accented you could not have accented they could not have accented
V-ing perfect
I could not have been accenting you could not have been accenting he could not have been accenting we could not have been accenting you could not have been accenting they could not have been accenting
Interrogative form
Simple form
could I accent? could you accent? could he accent? could we accent? could you accent? could they accent?
V-ing form
could I be accenting? could you be accenting? could he be accenting? could we be accenting? could you be accenting? could they be accenting?
Perfect
could I have accented? could you have accented? could he have accented? could we have accented? could you have accented? could they have accented?
V-ing perfect
could I have been accenting? could you have been accenting? could he have been accenting? could we have been accenting? could you have been accenting? could they have been accenting?
Interro-negative form
Simple form
could I not accent? could you not accent? could he not accent? could we not accent? could you not accent? could they not accent?
V-ing form
could I not be accenting? could you not be accenting? could he not be accenting? could we not be accenting? could you not be accenting? could they not be accenting?
Perfect
could I not have accented? could you not have accented? could he not have accented? could we not have accented? could you not have accented? could they not have accented?
V-ing perfect
could I not have been accenting? could you not have been accenting? could he not have been accenting? could we not have been accenting? could you not have been accenting? could they not have been accenting?