English verb conjugation COULD QUADRUPLE

Regular verb: quadruple - quadrupled - quadrupled

Affirmation

Simple form

I could quadruple
you could quadruple
he could quadruple
we could quadruple
you could quadruple
they could quadruple

V-ing form

I could be quadrupling
you could be quadrupling
he could be quadrupling
we could be quadrupling
you could be quadrupling
they could be quadrupling

Perfect

I could have quadrupled
you could have quadrupled
he could have quadrupled
we could have quadrupled
you could have quadrupled
they could have quadrupled

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I quadruple?
could you quadruple?
could he quadruple?
could we quadruple?
could you quadruple?
could they quadruple?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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