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female gender | Modal : no | may | might | can | could | shall | should | will | would | must | ought to

English verb conjugation COULD ERR

Regular verb: err - erred - erred


Affirmation

Simple form
I could err
you could err
he could err
we could err
you could err
they could err
V-ing form
I could be erring
you could be erring
he could be erring
we could be erring
you could be erring
they could be erring
Perfect
I could have erred
you could have erred
he could have erred
we could have erred
you could have erred
they could have erred
V-ing perfect
I could have been erring
you could have been erring
he could have been erring
we could have been erring
you could have been erring
they could have been erring

Negation

Simple form
I couldn't err
you couldn't err
he couldn't err
we couldn't err
you couldn't err
they couldn't err
V-ing form
I couldn't be erring
you couldn't be erring
he couldn't be erring
we couldn't be erring
you couldn't be erring
they couldn't be erring
Perfect
I couldn't have erred
you couldn't have erred
he couldn't have erred
we couldn't have erred
you couldn't have erred
they couldn't have erred
V-ing perfect
I couldn't have been erring
you couldn't have been erring
he couldn't have been erring
we couldn't have been erring
you couldn't have been erring
they couldn't have been erring

Interrogative form

Simple form
could I err?
could you err?
could he err?
could we err?
could you err?
could they err?
V-ing form
could I be erring?
could you be erring?
could he be erring?
could we be erring?
could you be erring?
could they be erring?
Perfect
could I have erred?
could you have erred?
could he have erred?
could we have erred?
could you have erred?
could they have erred?
V-ing perfect
could I have been erring?
could you have been erring?
could he have been erring?
could we have been erring?
could you have been erring?
could they have been erring?

Interro-negative form

Simple form
couldn't I err?
couldn't you err?
couldn't he err?
couldn't we err?
couldn't you err?
couldn't they err?
V-ing form
couldn't I be erring?
couldn't you be erring?
couldn't he be erring?
couldn't we be erring?
couldn't you be erring?
couldn't they be erring?
Perfect
couldn't I have erred?
couldn't you have erred?
couldn't he have erred?
couldn't we have erred?
couldn't you have erred?
couldn't they have erred?
V-ing perfect
couldn't I have been erring?
couldn't you have been erring?
couldn't he have been erring?
couldn't we have been erring?
couldn't you have been erring?
couldn't they have been erring?