I could carry you could carry she could carry we could carry you could carry they could carry
V-ing form
I could be carrying you could be carrying she could be carrying we could be carrying you could be carrying they could be carrying
Perfect
I could have carried you could have carried she could have carried we could have carried you could have carried they could have carried
V-ing perfect
I could have been carrying you could have been carrying she could have been carrying we could have been carrying you could have been carrying they could have been carrying
Negation
Simple form
I could not carry you could not carry she could not carry we could not carry you could not carry they could not carry
V-ing form
I could not be carrying you could not be carrying she could not be carrying we could not be carrying you could not be carrying they could not be carrying
Perfect
I could not have carried you could not have carried she could not have carried we could not have carried you could not have carried they could not have carried
V-ing perfect
I could not have been carrying you could not have been carrying she could not have been carrying we could not have been carrying you could not have been carrying they could not have been carrying
Interrogative form
Simple form
could I carry? could you carry? could she carry? could we carry? could you carry? could they carry?
V-ing form
could I be carrying? could you be carrying? could she be carrying? could we be carrying? could you be carrying? could they be carrying?
Perfect
could I have carried? could you have carried? could she have carried? could we have carried? could you have carried? could they have carried?
V-ing perfect
could I have been carrying? could you have been carrying? could she have been carrying? could we have been carrying? could you have been carrying? could they have been carrying?
Interro-negative form
Simple form
could I not carry? could you not carry? could she not carry? could we not carry? could you not carry? could they not carry?
V-ing form
could I not be carrying? could you not be carrying? could she not be carrying? could we not be carrying? could you not be carrying? could they not be carrying?
Perfect
could I not have carried? could you not have carried? could she not have carried? could we not have carried? could you not have carried? could they not have carried?
V-ing perfect
could I not have been carrying? could you not have been carrying? could she not have been carrying? could we not have been carrying? could you not have been carrying? could they not have been carrying?