I could decollate you could decollate she could decollate we could decollate you could decollate they could decollate
V-ing form
I could be decollating you could be decollating she could be decollating we could be decollating you could be decollating they could be decollating
Perfect
I could have decollated you could have decollated she could have decollated we could have decollated you could have decollated they could have decollated
V-ing perfect
I could have been decollating you could have been decollating she could have been decollating we could have been decollating you could have been decollating they could have been decollating
Negation
Simple form
I could not decollate you could not decollate she could not decollate we could not decollate you could not decollate they could not decollate
V-ing form
I could not be decollating you could not be decollating she could not be decollating we could not be decollating you could not be decollating they could not be decollating
Perfect
I could not have decollated you could not have decollated she could not have decollated we could not have decollated you could not have decollated they could not have decollated
V-ing perfect
I could not have been decollating you could not have been decollating she could not have been decollating we could not have been decollating you could not have been decollating they could not have been decollating
Interrogative form
Simple form
could I decollate? could you decollate? could she decollate? could we decollate? could you decollate? could they decollate?
V-ing form
could I be decollating? could you be decollating? could she be decollating? could we be decollating? could you be decollating? could they be decollating?
Perfect
could I have decollated? could you have decollated? could she have decollated? could we have decollated? could you have decollated? could they have decollated?
V-ing perfect
could I have been decollating? could you have been decollating? could she have been decollating? could we have been decollating? could you have been decollating? could they have been decollating?
Interro-negative form
Simple form
could I not decollate? could you not decollate? could she not decollate? could we not decollate? could you not decollate? could they not decollate?
V-ing form
could I not be decollating? could you not be decollating? could she not be decollating? could we not be decollating? could you not be decollating? could they not be decollating?
Perfect
could I not have decollated? could you not have decollated? could she not have decollated? could we not have decollated? could you not have decollated? could they not have decollated?
V-ing perfect
could I not have been decollating? could you not have been decollating? could she not have been decollating? could we not have been decollating? could you not have been decollating? could they not have been decollating?