I could loan you could loan he could loan we could loan you could loan they could loan
V-ing form
I could be loaning you could be loaning he could be loaning we could be loaning you could be loaning they could be loaning
Perfect
I could have loaned you could have loaned he could have loaned we could have loaned you could have loaned they could have loaned
V-ing perfect
I could have been loaning you could have been loaning he could have been loaning we could have been loaning you could have been loaning they could have been loaning
Negation
Simple form
I couldn't loan you couldn't loan he couldn't loan we couldn't loan you couldn't loan they couldn't loan
V-ing form
I couldn't be loaning you couldn't be loaning he couldn't be loaning we couldn't be loaning you couldn't be loaning they couldn't be loaning
Perfect
I couldn't have loaned you couldn't have loaned he couldn't have loaned we couldn't have loaned you couldn't have loaned they couldn't have loaned
V-ing perfect
I couldn't have been loaning you couldn't have been loaning he couldn't have been loaning we couldn't have been loaning you couldn't have been loaning they couldn't have been loaning
Interrogative form
Simple form
could I loan? could you loan? could he loan? could we loan? could you loan? could they loan?
V-ing form
could I be loaning? could you be loaning? could he be loaning? could we be loaning? could you be loaning? could they be loaning?
Perfect
could I have loaned? could you have loaned? could he have loaned? could we have loaned? could you have loaned? could they have loaned?
V-ing perfect
could I have been loaning? could you have been loaning? could he have been loaning? could we have been loaning? could you have been loaning? could they have been loaning?
Interro-negative form
Simple form
couldn't I loan? couldn't you loan? couldn't he loan? couldn't we loan? couldn't you loan? couldn't they loan?
V-ing form
couldn't I be loaning? couldn't you be loaning? couldn't he be loaning? couldn't we be loaning? couldn't you be loaning? couldn't they be loaning?
Perfect
couldn't I have loaned? couldn't you have loaned? couldn't he have loaned? couldn't we have loaned? couldn't you have loaned? couldn't they have loaned?
V-ing perfect
couldn't I have been loaning? couldn't you have been loaning? couldn't he have been loaning? couldn't we have been loaning? couldn't you have been loaning? couldn't they have been loaning?