English verb conjugation COULD OVERBOIL

Regular verb: overboil - overboiled - overboiled

Affirmation

Simple form

I could overboil
you could overboil
he could overboil
we could overboil
you could overboil
they could overboil

V-ing form

I could be overboiling
you could be overboiling
he could be overboiling
we could be overboiling
you could be overboiling
they could be overboiling

Perfect

I could have overboiled
you could have overboiled
he could have overboiled
we could have overboiled
you could have overboiled
they could have overboiled

V-ing perfect

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

Negation

Simple form

I could not overboil
you could not overboil
he could not overboil
we could not overboil
you could not overboil
they could not overboil

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I overboil?
could you overboil?
could he overboil?
could we overboil?
could you overboil?
could they overboil?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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