English verb conjugation COULD THANK

Regular verb: thank - thanked - thanked

Affirmation

Simple form

I could thank
you could thank
he could thank
we could thank
you could thank
they could thank

V-ing form

I could be thanking
you could be thanking
he could be thanking
we could be thanking
you could be thanking
they could be thanking

Perfect

I could have thanked
you could have thanked
he could have thanked
we could have thanked
you could have thanked
they could have thanked

V-ing perfect

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

Negation

Simple form

I could not thank
you could not thank
he could not thank
we could not thank
you could not thank
they could not thank

V-ing form

I could not be thanking
you could not be thanking
he could not be thanking
we could not be thanking
you could not be thanking
they could not be thanking

Perfect

I could not have thanked
you could not have thanked
he could not have thanked
we could not have thanked
you could not have thanked
they could not have thanked

V-ing perfect

I could not have been thanking
you could not have been thanking
he could not have been thanking
we could not have been thanking
you could not have been thanking
they could not have been thanking

Interrogative form

Simple form

could I thank?
could you thank?
could he thank?
could we thank?
could you thank?
could they thank?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

could I not thank?
could you not thank?
could he not thank?
could we not thank?
could you not thank?
could they not thank?

V-ing form

could I not be thanking?
could you not be thanking?
could he not be thanking?
could we not be thanking?
could you not be thanking?
could they not be thanking?

Perfect

could I not have thanked?
could you not have thanked?
could he not have thanked?
could we not have thanked?
could you not have thanked?
could they not have thanked?

V-ing perfect

could I not have been thanking?
could you not have been thanking?
could he not have been thanking?
could we not have been thanking?
could you not have been thanking?
could they not have been thanking?

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