English verb conjugation COULD RIPEN

Regular verb: ripen - ripened - ripened

Affirmation

Simple form

I could ripen
you could ripen
he could ripen
we could ripen
you could ripen
they could ripen

V-ing form

I could be ripening
you could be ripening
he could be ripening
we could be ripening
you could be ripening
they could be ripening

Perfect

I could have ripened
you could have ripened
he could have ripened
we could have ripened
you could have ripened
they could have ripened

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I ripen?
could you ripen?
could he ripen?
could we ripen?
could you ripen?
could they ripen?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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