English verb conjugation COULD SPECIALIZE

Regular verb: specialize - specialized - specialized

Affirmation

Simple form

I could specialize
you could specialize
she could specialize
we could specialize
you could specialize
they could specialize

V-ing form

I could be specializing
you could be specializing
she could be specializing
we could be specializing
you could be specializing
they could be specializing

Perfect

I could have specialized
you could have specialized
she could have specialized
we could have specialized
you could have specialized
they could have specialized

V-ing perfect

I could have been specializing
you could have been specializing
she could have been specializing
we could have been specializing
you could have been specializing
they could have been specializing

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I specialize?
could you specialize?
could she specialize?
could we specialize?
could you specialize?
could they specialize?

V-ing form

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

Perfect

could I have specialized?
could you have specialized?
could she have specialized?
could we have specialized?
could you have specialized?
could they have specialized?

V-ing perfect

could I have been specializing?
could you have been specializing?
could she have been specializing?
could we have been specializing?
could you have been specializing?
could they have been specializing?

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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