English verb conjugation COULD STY

Regular verb: sty - stied - stied

Affirmation

Simple form

I could sty
you could sty
he could sty
we could sty
you could sty
they could sty

V-ing form

I could be stying
you could be stying
he could be stying
we could be stying
you could be stying
they could be stying

Perfect

I could have stied
you could have stied
he could have stied
we could have stied
you could have stied
they could have stied

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I sty?
could you sty?
could he sty?
could we sty?
could you sty?
could they sty?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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