English verb conjugation COULD UNBUCKLE

Regular verb: unbuckle - unbuckled - unbuckled

Affirmation

Simple form

I could unbuckle
you could unbuckle
he could unbuckle
we could unbuckle
you could unbuckle
they could unbuckle

V-ing form

I could be unbuckling
you could be unbuckling
he could be unbuckling
we could be unbuckling
you could be unbuckling
they could be unbuckling

Perfect

I could have unbuckled
you could have unbuckled
he could have unbuckled
we could have unbuckled
you could have unbuckled
they could have unbuckled

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I unbuckle?
could you unbuckle?
could he unbuckle?
could we unbuckle?
could you unbuckle?
could they unbuckle?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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