English verb conjugation COULD EXPOUND

Regular verb: expound - expounded - expounded

Affirmation

Simple form

I could expound
you could expound
he could expound
we could expound
you could expound
they could expound

V-ing form

I could be expounding
you could be expounding
he could be expounding
we could be expounding
you could be expounding
they could be expounding

Perfect

I could have expounded
you could have expounded
he could have expounded
we could have expounded
you could have expounded
they could have expounded

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I expound?
could you expound?
could he expound?
could we expound?
could you expound?
could they expound?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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