English verb conjugation COULD GRUBSTAKE

Regular verb: grubstake - grubstaked - grubstaked

Affirmation

Simple form

I could grubstake
you could grubstake
he could grubstake
we could grubstake
you could grubstake
they could grubstake

V-ing form

I could be grubstaking
you could be grubstaking
he could be grubstaking
we could be grubstaking
you could be grubstaking
they could be grubstaking

Perfect

I could have grubstaked
you could have grubstaked
he could have grubstaked
we could have grubstaked
you could have grubstaked
they could have grubstaked

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I grubstake?
could you grubstake?
could he grubstake?
could we grubstake?
could you grubstake?
could they grubstake?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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