English verb conjugation COULD CONSTRAIN

Regular verb: constrain - constrained - constrained

Affirmation

Simple form

I could constrain
you could constrain
he could constrain
we could constrain
you could constrain
they could constrain

V-ing form

I could be constraining
you could be constraining
he could be constraining
we could be constraining
you could be constraining
they could be constraining

Perfect

I could have constrained
you could have constrained
he could have constrained
we could have constrained
you could have constrained
they could have constrained

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I constrain?
could you constrain?
could he constrain?
could we constrain?
could you constrain?
could they constrain?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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