English verb conjugation COULD STRAITEN

Regular verb: straiten - straitened - straitened

Affirmation

Simple form

I could straiten
you could straiten
he could straiten
we could straiten
you could straiten
they could straiten

V-ing form

I could be straitening
you could be straitening
he could be straitening
we could be straitening
you could be straitening
they could be straitening

Perfect

I could have straitened
you could have straitened
he could have straitened
we could have straitened
you could have straitened
they could have straitened

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I straiten?
could you straiten?
could he straiten?
could we straiten?
could you straiten?
could they straiten?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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