English verb conjugation COULD HELVE

Regular verb: helve - helved - helved

Affirmation

Simple form

I could helve
you could helve
he could helve
we could helve
you could helve
they could helve

V-ing form

I could be helving
you could be helving
he could be helving
we could be helving
you could be helving
they could be helving

Perfect

I could have helved
you could have helved
he could have helved
we could have helved
you could have helved
they could have helved

V-ing perfect

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

Negation

Simple form

I could not helve
you could not helve
he could not helve
we could not helve
you could not helve
they could not helve

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I helve?
could you helve?
could he helve?
could we helve?
could you helve?
could they helve?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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