English verb conjugation COULD MUMBLE

Regular verb: mumble - mumbled - mumbled

Affirmation

Simple form

I could mumble
you could mumble
he could mumble
we could mumble
you could mumble
they could mumble

V-ing form

I could be mumbling
you could be mumbling
he could be mumbling
we could be mumbling
you could be mumbling
they could be mumbling

Perfect

I could have mumbled
you could have mumbled
he could have mumbled
we could have mumbled
you could have mumbled
they could have mumbled

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I mumble?
could you mumble?
could he mumble?
could we mumble?
could you mumble?
could they mumble?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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