English verb conjugation COULD UNDERSTOCK

Regular verb: understock - understocked - understocked

Affirmation

Simple form

I could understock
you could understock
he could understock
we could understock
you could understock
they could understock

V-ing form

I could be understocking
you could be understocking
he could be understocking
we could be understocking
you could be understocking
they could be understocking

Perfect

I could have understocked
you could have understocked
he could have understocked
we could have understocked
you could have understocked
they could have understocked

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I understock?
could you understock?
could he understock?
could we understock?
could you understock?
could they understock?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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