English verb conjugation COULD YELL

Regular verb: yell - yelled - yelled

Affirmation

Simple form

I could yell
you could yell
he could yell
we could yell
you could yell
they could yell

V-ing form

I could be yelling
you could be yelling
he could be yelling
we could be yelling
you could be yelling
they could be yelling

Perfect

I could have yelled
you could have yelled
he could have yelled
we could have yelled
you could have yelled
they could have yelled

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I yell?
could you yell?
could he yell?
could we yell?
could you yell?
could they yell?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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