English verb conjugation COULD WINTERIZE

Regular verb: winterize - winterized - winterized

Affirmation

Simple form

I could winterize
you could winterize
he could winterize
we could winterize
you could winterize
they could winterize

V-ing form

I could be winterizing
you could be winterizing
he could be winterizing
we could be winterizing
you could be winterizing
they could be winterizing

Perfect

I could have winterized
you could have winterized
he could have winterized
we could have winterized
you could have winterized
they could have winterized

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I winterize?
could you winterize?
could he winterize?
could we winterize?
could you winterize?
could they winterize?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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