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 could not straiten
you could not straiten
he could not straiten
we could not straiten
you could not straiten
they could not straiten

V-ing form

I could not be straitening
you could not be straitening
he could not be straitening
we could not be straitening
you could not be straitening
they could not be straitening

Perfect

I could not have straitened
you could not have straitened
he could not have straitened
we could not have straitened
you could not have straitened
they could not have straitened

V-ing perfect

I could not have been straitening
you could not have been straitening
he could not have been straitening
we could not have been straitening
you could not have been straitening
they could not 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

could I not straiten?
could you not straiten?
could he not straiten?
could we not straiten?
could you not straiten?
could they not straiten?

V-ing form

could I not be straitening?
could you not be straitening?
could he not be straitening?
could we not be straitening?
could you not be straitening?
could they not be straitening?

Perfect

could I not have straitened?
could you not have straitened?
could he not have straitened?
could we not have straitened?
could you not have straitened?
could they not have straitened?

V-ing perfect

could I not have been straitening?
could you not have been straitening?
could he not have been straitening?
could we not have been straitening?
could you not have been straitening?
could they not have been straitening?

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