English verb conjugation COULD OVERBOIL

Regular verb: overboil - overboiled - overboiled

Affirmation

Simple form

I could overboil
you could overboil
she could overboil
we could overboil
you could overboil
they could overboil

V-ing form

I could be overboiling
you could be overboiling
she could be overboiling
we could be overboiling
you could be overboiling
they could be overboiling

Perfect

I could have overboiled
you could have overboiled
she 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
she could have been overboiling
we could have been overboiling
you could have been overboiling
they could have been overboiling

Negation

Simple form

I couldn't overboil
you couldn't overboil
she couldn't overboil
we couldn't overboil
you couldn't overboil
they couldn't overboil

V-ing form

I couldn't be overboiling
you couldn't be overboiling
she couldn't be overboiling
we couldn't be overboiling
you couldn't be overboiling
they couldn't be overboiling

Perfect

I couldn't have overboiled
you couldn't have overboiled
she couldn't have overboiled
we couldn't have overboiled
you couldn't have overboiled
they couldn't have overboiled

V-ing perfect

I couldn't have been overboiling
you couldn't have been overboiling
she couldn't have been overboiling
we couldn't have been overboiling
you couldn't have been overboiling
they couldn't have been overboiling

Interrogative form

Simple form

could I overboil?
could you overboil?
could she overboil?
could we overboil?
could you overboil?
could they overboil?

V-ing form

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

Perfect

could I have overboiled?
could you have overboiled?
could she 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 she have been overboiling?
could we have been overboiling?
could you have been overboiling?
could they have been overboiling?

Interro-negative form

Simple form

couldn't I overboil?
couldn't you overboil?
couldn't she overboil?
couldn't we overboil?
couldn't you overboil?
couldn't they overboil?

V-ing form

couldn't I be overboiling?
couldn't you be overboiling?
couldn't she be overboiling?
couldn't we be overboiling?
couldn't you be overboiling?
couldn't they be overboiling?

Perfect

couldn't I have overboiled?
couldn't you have overboiled?
couldn't she have overboiled?
couldn't we have overboiled?
couldn't you have overboiled?
couldn't they have overboiled?

V-ing perfect

couldn't I have been overboiling?
couldn't you have been overboiling?
couldn't she have been overboiling?
couldn't we have been overboiling?
couldn't you have been overboiling?
couldn't they have been overboiling?

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