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