English verb conjugation COULD FUNCTION

Regular verb: function - functioned - functioned

Affirmation

Simple form

I could function
you could function
he could function
we could function
you could function
they could function

V-ing form

I could be functioning
you could be functioning
he could be functioning
we could be functioning
you could be functioning
they could be functioning

Perfect

I could have functioned
you could have functioned
he could have functioned
we could have functioned
you could have functioned
they could have functioned

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I function?
could you function?
could he function?
could we function?
could you function?
could they function?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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