I could get you could get she could get we could get you could get they could get
V-ing form
I could be getting you could be getting she could be getting we could be getting you could be getting they could be getting
Perfect
I could have got you could have got she could have got we could have got you could have got they could have got
V-ing perfect
I could have been getting you could have been getting she could have been getting we could have been getting you could have been getting they could have been getting
Negation
Simple form
I couldn't get you couldn't get she couldn't get we couldn't get you couldn't get they couldn't get
V-ing form
I couldn't be getting you couldn't be getting she couldn't be getting we couldn't be getting you couldn't be getting they couldn't be getting
Perfect
I couldn't have got you couldn't have got she couldn't have got we couldn't have got you couldn't have got they couldn't have got
V-ing perfect
I couldn't have been getting you couldn't have been getting she couldn't have been getting we couldn't have been getting you couldn't have been getting they couldn't have been getting
Interrogative form
Simple form
could I get? could you get? could she get? could we get? could you get? could they get?
V-ing form
could I be getting? could you be getting? could she be getting? could we be getting? could you be getting? could they be getting?
Perfect
could I have got? could you have got? could she have got? could we have got? could you have got? could they have got?
V-ing perfect
could I have been getting? could you have been getting? could she have been getting? could we have been getting? could you have been getting? could they have been getting?
Interro-negative form
Simple form
couldn't I get? couldn't you get? couldn't she get? couldn't we get? couldn't you get? couldn't they get?
V-ing form
couldn't I be getting? couldn't you be getting? couldn't she be getting? couldn't we be getting? couldn't you be getting? couldn't they be getting?
Perfect
couldn't I have got? couldn't you have got? couldn't she have got? couldn't we have got? couldn't you have got? couldn't they have got?
V-ing perfect
couldn't I have been getting? couldn't you have been getting? couldn't she have been getting? couldn't we have been getting? couldn't you have been getting? couldn't they have been getting?