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