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 couldn't carry you couldn't carry she couldn't carry we couldn't carry you couldn't carry they couldn't carry
V-ing form
I couldn't be carrying you couldn't be carrying she couldn't be carrying we couldn't be carrying you couldn't be carrying they couldn't be carrying
Perfect
I couldn't have carried you couldn't have carried she couldn't have carried we couldn't have carried you couldn't have carried they couldn't have carried
V-ing perfect
I couldn't have been carrying you couldn't have been carrying she couldn't have been carrying we couldn't have been carrying you couldn't have been carrying they couldn't 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
couldn't I carry? couldn't you carry? couldn't she carry? couldn't we carry? couldn't you carry? couldn't they carry?
V-ing form
couldn't I be carrying? couldn't you be carrying? couldn't she be carrying? couldn't we be carrying? couldn't you be carrying? couldn't they be carrying?
Perfect
couldn't I have carried? couldn't you have carried? couldn't she have carried? couldn't we have carried? couldn't you have carried? couldn't they have carried?
V-ing perfect
couldn't I have been carrying? couldn't you have been carrying? couldn't she have been carrying? couldn't we have been carrying? couldn't you have been carrying? couldn't they have been carrying?