English verb conjugation COULD COMPLAIN

Regular verb: complain - complained - complained

Affirmation

Simple form

I could complain
you could complain
he could complain
we could complain
you could complain
they could complain

V-ing form

I could be complaining
you could be complaining
he could be complaining
we could be complaining
you could be complaining
they could be complaining

Perfect

I could have complained
you could have complained
he could have complained
we could have complained
you could have complained
they could have complained

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I complain?
could you complain?
could he complain?
could we complain?
could you complain?
could they complain?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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