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