English verb conjugation COULD AIL

Regular verb: ail - ailed - ailed

Affirmation

Simple form

I could ail
you could ail
he could ail
we could ail
you could ail
they could ail

V-ing form

I could be ailing
you could be ailing
he could be ailing
we could be ailing
you could be ailing
they could be ailing

Perfect

I could have ailed
you could have ailed
he could have ailed
we could have ailed
you could have ailed
they could have ailed

V-ing perfect

I could have been ailing
you could have been ailing
he could have been ailing
we could have been ailing
you could have been ailing
they could have been ailing

Negation

Simple form

I couldn't ail
you couldn't ail
he couldn't ail
we couldn't ail
you couldn't ail
they couldn't ail

V-ing form

I couldn't be ailing
you couldn't be ailing
he couldn't be ailing
we couldn't be ailing
you couldn't be ailing
they couldn't be ailing

Perfect

I couldn't have ailed
you couldn't have ailed
he couldn't have ailed
we couldn't have ailed
you couldn't have ailed
they couldn't have ailed

V-ing perfect

I couldn't have been ailing
you couldn't have been ailing
he couldn't have been ailing
we couldn't have been ailing
you couldn't have been ailing
they couldn't have been ailing

Interrogative form

Simple form

could I ail?
could you ail?
could he ail?
could we ail?
could you ail?
could they ail?

V-ing form

could I be ailing?
could you be ailing?
could he be ailing?
could we be ailing?
could you be ailing?
could they be ailing?

Perfect

could I have ailed?
could you have ailed?
could he have ailed?
could we have ailed?
could you have ailed?
could they have ailed?

V-ing perfect

could I have been ailing?
could you have been ailing?
could he have been ailing?
could we have been ailing?
could you have been ailing?
could they have been ailing?

Interro-negative form

Simple form

couldn't I ail?
couldn't you ail?
couldn't he ail?
couldn't we ail?
couldn't you ail?
couldn't they ail?

V-ing form

couldn't I be ailing?
couldn't you be ailing?
couldn't he be ailing?
couldn't we be ailing?
couldn't you be ailing?
couldn't they be ailing?

Perfect

couldn't I have ailed?
couldn't you have ailed?
couldn't he have ailed?
couldn't we have ailed?
couldn't you have ailed?
couldn't they have ailed?

V-ing perfect

couldn't I have been ailing?
couldn't you have been ailing?
couldn't he have been ailing?
couldn't we have been ailing?
couldn't you have been ailing?
couldn't they have been ailing?

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