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