English verb conjugation COULD SLACKEN

Regular verb: slacken - slackened - slackened

Affirmation

Simple form

I could slacken
you could slacken
he could slacken
we could slacken
you could slacken
they could slacken

V-ing form

I could be slackening
you could be slackening
he could be slackening
we could be slackening
you could be slackening
they could be slackening

Perfect

I could have slackened
you could have slackened
he could have slackened
we could have slackened
you could have slackened
they could have slackened

V-ing perfect

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

Negation

Simple form

I could not slacken
you could not slacken
he could not slacken
we could not slacken
you could not slacken
they could not slacken

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I slacken?
could you slacken?
could he slacken?
could we slacken?
could you slacken?
could they slacken?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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