English verb conjugation COULD GUM

Regular verb: gum - gummed - gummed

Affirmation

Simple form

I could gum
you could gum
he could gum
we could gum
you could gum
they could gum

V-ing form

I could be gumming
you could be gumming
he could be gumming
we could be gumming
you could be gumming
they could be gumming

Perfect

I could have gummed
you could have gummed
he could have gummed
we could have gummed
you could have gummed
they could have gummed

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I gum?
could you gum?
could he gum?
could we gum?
could you gum?
could they gum?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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