English verb conjugation COULD BLANK

Regular verb: blank - blanked - blanked

Affirmation

Simple form

I could blank
you could blank
he could blank
we could blank
you could blank
they could blank

V-ing form

I could be blanking
you could be blanking
he could be blanking
we could be blanking
you could be blanking
they could be blanking

Perfect

I could have blanked
you could have blanked
he could have blanked
we could have blanked
you could have blanked
they could have blanked

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I blank?
could you blank?
could he blank?
could we blank?
could you blank?
could they blank?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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