English verb conjugation CAN ERR

Regular verb: err - erred - erred

Affirmation

Simple form

I can err
you can err
he can err
we can err
you can err
they can err

V-ing form

I can be erring
you can be erring
he can be erring
we can be erring
you can be erring
they can be erring

Perfect

I can have erred
you can have erred
he can have erred
we can have erred
you can have erred
they can have erred

V-ing perfect

I can have been erring
you can have been erring
he can have been erring
we can have been erring
you can have been erring
they can have been erring

Negation

Simple form

I can't err
you can't err
he can't err
we can't err
you can't err
they can't err

V-ing form

I can't be erring
you can't be erring
he can't be erring
we can't be erring
you can't be erring
they can't be erring

Perfect

I can't have erred
you can't have erred
he can't have erred
we can't have erred
you can't have erred
they can't have erred

V-ing perfect

I can't have been erring
you can't have been erring
he can't have been erring
we can't have been erring
you can't have been erring
they can't have been erring

Interrogative form

Simple form

can I err?
can you err?
can he err?
can we err?
can you err?
can they err?

V-ing form

can I be erring?
can you be erring?
can he be erring?
can we be erring?
can you be erring?
can they be erring?

Perfect

can I have erred?
can you have erred?
can he have erred?
can we have erred?
can you have erred?
can they have erred?

V-ing perfect

can I have been erring?
can you have been erring?
can he have been erring?
can we have been erring?
can you have been erring?
can they have been erring?

Interro-negative form

Simple form

can't I err?
can't you err?
can't he err?
can't we err?
can't you err?
can't they err?

V-ing form

can't I be erring?
can't you be erring?
can't he be erring?
can't we be erring?
can't you be erring?
can't they be erring?

Perfect

can't I have erred?
can't you have erred?
can't he have erred?
can't we have erred?
can't you have erred?
can't they have erred?

V-ing perfect

can't I have been erring?
can't you have been erring?
can't he have been erring?
can't we have been erring?
can't you have been erring?
can't they have been erring?

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