English verb conjugation COULD CONCRETIZE

Regular verb: concretize - concretized - concretized

Affirmation

Simple form

I could concretize
you could concretize
she could concretize
we could concretize
you could concretize
they could concretize

V-ing form

I could be concretizing
you could be concretizing
she could be concretizing
we could be concretizing
you could be concretizing
they could be concretizing

Perfect

I could have concretized
you could have concretized
she could have concretized
we could have concretized
you could have concretized
they could have concretized

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I concretize?
could you concretize?
could she concretize?
could we concretize?
could you concretize?
could they concretize?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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