English verb conjugation COULD LEAPFROG

Regular verb: leapfrog - leapfroged - leapfroged

Affirmation

Simple form

I could leapfrog
you could leapfrog
he could leapfrog
we could leapfrog
you could leapfrog
they could leapfrog

V-ing form

I could be leapfroging
you could be leapfroging
he could be leapfroging
we could be leapfroging
you could be leapfroging
they could be leapfroging

Perfect

I could have leapfroged
you could have leapfroged
he could have leapfroged
we could have leapfroged
you could have leapfroged
they could have leapfroged

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I leapfrog?
could you leapfrog?
could he leapfrog?
could we leapfrog?
could you leapfrog?
could they leapfrog?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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