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